SkyLock Media

Professional exam and certificate preparation

Prepare with clarity. Advance with confidence.

Focused study guides and practice tools for the certifications that move careers forward.

01 Clear study paths02 Realistic practice03 Independent learning
Professional analyzing Six Sigma methods on a digital dashboard
Learn for what's nextPractical preparation, built to expand
  • FAA Part 107 Remote Pilot
  • Six Sigma White to Master Black Belt
  • AAPC CPC
  • PMP® exam preparation
  • Excel Expert MO-211
  • FAA Private Pilot (PAR)
  • One account, every course

Six courses ready. More on the way.

Start free

Study before you spend a dollar.

Every course opens with real material, not a sales tour: complete lessons, genuine exam-style questions and explanations for every answer. One free account unlocks all of it, with no card and no time limit.

Free preview · 5 courses

Try the actual course, not a brochure.

Each paid course opens complete lessons, real questions from its lesson quizzes and a short preview test, so you know exactly how it teaches, and whether it suits you, before you buy.

Keep your progress when you upgrade. Paid plans are one-time purchases with no automatic renewal.

Completely free · every lesson

Excel Master Class, the whole course, free.

Advanced formulas, PivotTables, charts, conditional formatting and macros, built to the Microsoft Office Specialist: Excel Expert (MO-211) exam, plus beyond-the-exam tracks on Power Query, Power Pivot and DAX. Nothing is locked.

17lessons
131practice questions
4MO-211 exam domains

Sharpen the spreadsheet skills every job uses, or earn the certification. Either way, it costs nothing.

Start Excel freeSee what’s inside

One account covers all six courses: free previews of five, the complete Excel Master Class, and My Courses to track everything.

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Available now

Professional Six Sigma preparation.

Build a rigorous foundation, progress through advanced methods, and study the responsibilities associated with every major belt level.

Six Sigma DMAIC cycle behind a seated process-improvement practitionerAvailable now

Process improvement certification

Six Sigma Test Prep

A professor-grade study experience covering the shared foundations and advanced methods used across White, Yellow, Green, Black, and Master Black Belt paths.

  • 28 professionally structured lessons
  • White through Master Black Belt paths
  • Defined terminology and acronyms
  • Diagrams, worked examples, and knowledge checks
Log inCreate accountAlso free: the complete Excel Master Class
One SkyLock Media account covers every course.
28professional study lessons
5belt-level learning paths
Every termdefined in context
Every lessonbuilt for applied understanding
See screenshots, what’s included, and belt pricing

Inside the course

Learn the language. Apply the method.

Move from precisely defined terminology to worked calculations, decision frameworks, lifecycle thinking, and advanced belt-level lessons.

Six Sigma chapter vocabulary defining foundational terms and DMAIC
Clear vocabulary and acronym definitions
Six Sigma lesson comparing unit yield, DPU, DPMU, DPO, and DPMO calculations
Worked metrics and denominator comparisons
Six Sigma lesson showing a five-step diagnostic and intervention framework
Decision frameworks with knowledge checks
Six Sigma Black Belt and Master Black Belt advanced lesson catalog
Advanced Black Belt and Master Black Belt paths
Six Sigma retrieval checkpoint listing eight numbered questions on examination profiles, bodies of knowledge, belt roles, provider selection, and error logging, each with its answer hidden until revealed
Retrieval checkpoints that ask before they tell
Six Sigma cumulative practice test showing a hundred-question navigator above a control-phase question with four answer options
A 100-question cumulative practice test

Free preview, then buy only what you need

Preview every belt free. Purchase the level you need.

Create a SkyLock Media account and explore one lesson from each belt, a 10-question quiz, and a 20-question test — no payment required, no time limit. Each belt purchase grants 3 months of access and includes every belt below it.

Free preview$0No time limit
  • 1 lesson from each belt
  • 10-question quiz
  • 20-question test
White Belt$49.993 months of access

Six Sigma language, customer focus, process thinking, and improvement fundamentals.

  • 6 study guides included (through White Belt)
Yellow Belt$59.993 months of access

Team participation, process definition, data collection, and practical DMAIC support.

  • 8 study guides included (through Yellow Belt)
Green Belt$69.993 months of access

Complete DMAIC project work, measurement, statistics, and root-cause analysis.

  • 14 study guides included (through Green Belt)
Black Belt$89.993 months of access

Advanced analysis, project leadership, financial value, and experiment design.

  • 21 study guides included (through Black Belt)
Master Black Belt$99.993 months of access

Enterprise deployment, portfolio governance, coaching, and advanced analytics.

  • 28 study guides included (the complete curriculum)

Explore the curriculum

Build capability from White Belt through Master Black Belt.

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Free preview available

Professional CPC exam preparation.

Learn medical coding decisions through 18 structured lessons, 135 detailed instructional sections, original visual explanations, and 313 questions mapped directly to lesson objectives.

Transparent anatomical figure with visible skeletal, cardiovascular, respiratory, and digestive systemsAvailable now

AAPC CPC exam preparation

CPC Exam Prep

A complete lesson-plan question pool covering terminology, guidelines, ICD-10-CM, HCPCS Level II, E/M, anesthesia, surgery, radiology, pathology/laboratory, medicine, and integrated cases.

  • 18 owner-approved study lessons
  • 135 detailed instructional sections
  • 313 original, section-linked questions
  • 45 accessible original diagrams with enlargement
  • Lesson quizzes and a 100-question practice exam
Log inCreate accountAlso free: the complete Excel Master Class
Independent CPC preparation with a documented source and rights boundary.
18complete lessons
313original questions
135instructional sections
45enlargeable diagrams
See screenshots, what’s included, and pricing

Inside the course

Learn the language. See the anatomy. Practice the decision.

Each CPC lesson connects precise terminology and learning objectives to professional medical visuals, worked coding examples, exam traps, and section-linked questions.

CPC digestive-system lesson learning objectives for endoscopy, lesion removal, hernia repair, surgical approach, and anatomy
Specific learning objectives for every lesson
CPC terminology lesson comparing procedure suffixes with diagnosis suffixes and a worked example
Organized terminology with worked examples
CPC integumentary-system lesson defining excision, lesion, and wound-repair vocabulary
Precise coding vocabulary in context
CPC digestive anatomy comparison showing upper endoscopy, limited lower endoscopy, and complete colon examination routes
Realistic anatomy and procedure-route diagrams
CPC lesson closing with a list of common exam errors to avoid
Exam traps at the close of every lesson
CPC practice questions covering ICD-10-CM Tabular List and Alphabetic Index conventions
Exam-style questions across coding systems

Free preview or complete access

Try two CPC lessons free. Choose the study window that fits.

Create a SkyLock Media account to study Lessons 5 and 10, answer one-third of each lesson quiz, and take a 10-question preview test with no payment or time limit. Both paid plans unlock the complete course through a one-time purchase with no automatic renewal.

Free preview$0No time limit
  • Complete Lessons 5 and 10
  • One-third of both lesson quizzes
  • 10-question cumulative preview test
3-month access$99.993 months of access

Focused access for learners preparing to test within the next three months.

  • All 18 CPC lessons and 313 current questions
  • 135 detailed instructional sections
  • Every lesson quiz and 100-question practice exam
  • 45 premium medical diagrams with enlargement
  • One-time payment with no automatic renewal
Annual access$169.9912 months of access

A full year for extended study, reinforcement, and exam scheduling flexibility.

  • All 18 CPC lessons and 313 current questions
  • 135 detailed instructional sections
  • Every lesson quiz and 100-question practice exam
  • 45 premium medical diagrams with enlargement
  • One-time payment with no automatic renewal
View CPC purchase plans

Explore the curriculum

Start two complete CPC lessons free.

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Free preview available

Project management certification preparation.

Built for the examination content outline that took effect in July 2026, with 17 lessons, 96 instructional sections, and 368 original questions written to that outline’s domains and response formats.

Project manager leading a team planning session with a project timeline and risk boardAvailable now

PMP® certification exam preparation

Project Management Certification Prep

A complete curriculum across the three exam domains — People, Process, and Business Environment — with worked calculations, case scenarios, and a rationale for every answer option.

  • 17 lessons and 96 instructional sections
  • 368 original, objective-linked questions
  • Every 2026 response format, including case scenarios and point-and-click
  • 46 original diagrams with enlargement
  • 268 defined terms, each distinguished from what it is confused with
Log inCreate accountAlso free: the complete Excel Master Class
Independent preparation. SkyLock Media is not affiliated with or endorsed by PMI.
17complete lessons
368original questions
96instructional sections
46enlargeable diagrams
See screenshots, what’s included, and pricing

Inside the course

Built for the exam as it is now, not as it was.

The examination content outline changed in July 2026 and Business Environment rose from 8% to 26% of the exam. This course is written to the current outline: question counts follow its domain weighting, and every response format it lists is implemented and graded.

PMP chapter vocabulary cards defining communication strategy, communication channel, information radiator, active listening, closed feedback loop, disposition, status report, and decision request, each with a note distinguishing it from what it is confused with
Every term defined, and separated from what it is confused with
PMP lesson diagram showing communication channels for teams of three, five, and eight people alongside the formula n(n-1)/2
Original diagrams with the arithmetic worked out
PMP worked example pricing a change request across scope, quality, compliance, schedule, and risk, followed by a reveal-answer knowledge check
Worked examples you can reproduce, then check yourself
PMP practice question on risk response cost showing the correct answer, the arithmetic behind it, why the chosen answer was wrong, and the exam trap
Why the key is right, and why your answer was not
PMP lesson learning objectives BIZ-06 through BIZ-10 covering change control, impediments, risks and issues, risk analysis, and risk responses
Specific, numbered objectives for every lesson
PMP cumulative practice test showing a 100-question navigator and an exam-style scenario question
A 100-question cumulative practice test

Free preview or complete access

Study two lessons free. Choose the window that fits your exam date.

Create a SkyLock Media account to open Lesson 4 and Lesson 7 in full, answer one third of each lesson’s quiz, and take a 10-question cumulative test drawn from across the curriculum. No payment and no time limit.

Free preview$0No time limit
  • Complete Lessons 4 and 7
  • One-third of both lesson quizzes
  • 10-question cumulative preview test
Exam Prep$89.996 months of access

The full curriculum and question bank across all three exam domains, with practice tests.

  • All 17 lessons and 368 questions
  • 96 instructional sections
  • Every lesson quiz and the full practice test
  • 46 original diagrams with enlargement
  • One-time payment with no automatic renewal
Prep + 35-Hour Certificate$169.9912 months of access

Everything in Exam Prep, plus tracked instruction hours and a certificate recording the 35 training hours required to apply.

  • All 17 lessons and 368 questions
  • 96 instructional sections
  • Every lesson quiz and the full practice test
  • 46 original diagrams with enlargement
  • One-time payment with no automatic renewal
View PMP purchase plans

Explore the curriculum

Start two complete PMP lessons free.

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Completely free

Microsoft Excel Expert certification preparation.

Built to the Microsoft Office Specialist: Excel Expert (MO-211) exam blueprint, with 9 graded lessons across all four exam domains, plus beyond-the-exam tracks on Power Query, Power Pivot and DAX, VBA, modern dynamic arrays, and financial modeling that a working analyst needs but the exam doesn’t cover.

SkyLock Media founder working at a laptop beside a spreadsheet dashboardAvailable now

Microsoft Office Specialist: Excel Expert (MO-211) preparation

Excel Master Class

Advanced formulas, PivotTables and PivotCharts, conditional formatting, and macros — built to the real MO-211 exam blueprint — plus beyond-the-exam tracks on Power Query, Power Pivot and DAX, VBA, modern dynamic arrays, and financial modeling for day-to-day analyst work the exam doesn’t test.

  • 17 lessons and 72 instructional sections
  • 131 original, objective-linked questions
  • All four MO-211 domains, weighted to match the real exam
  • A cumulative practice exam drawn fresh each attempt
  • Free to every signed-in account, with no card and no time limit
Log inCreate free account
Independent preparation. SkyLock Media is not affiliated with, endorsed by, or sponsored by Microsoft.
17complete lessons
131original questions
72instructional sections
4MO-211 exam domains covered
See screenshots and what’s included

Inside the course

The complete course, free.

Create a free SkyLock Media account and the complete curriculum — every lesson, every quiz, and the cumulative practice exam — is open immediately, with no payment, no card, and no time limit. Nothing sits behind a paywall.

Excel Master Class curriculum listing Advanced Charts, PivotTables, PivotCharts, and the Final Review lesson, each with its question count and study/quiz links
A full curriculum mapped to MO-211's own domains
Excel Master Class quiz questions on a PivotTable's four field-list drop areas and where automatic refresh-on-open is configured
Scenario questions, not vocabulary recall
Excel Master Class learning objectives CHT-01 through CHT-07 for the Advanced Charts lesson, covering secondary axes, Combo, Box & Whisker, Histogram, Funnel, Waterfall, and Sunburst charts
Specific, numbered objectives for every lesson
Excel Master Class worked example isolating a wrong result inside a nested VLOOKUP and IF formula using Evaluate Formula, with key terms and a reveal-answer knowledge check
Worked examples that isolate exactly where a formula breaks
Excel Master Class vocabulary cards defining NOW, TODAY, WEEKDAY, WORKDAY, Goal Seek, Scenario Manager, Consolidate, and by category, each distinguished from what it is confused with
Every term defined, and separated from what it is confused with
Excel Master Class lesson explaining IFS, SWITCH, AND, OR, and NOT, including De Morgan's law for negating a compound condition, with example formulas
The reasoning behind a formula, not just its syntax

Explore the curriculum

Start the whole Excel Master Class course free.

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New: FAA Private Pilot

Private pilot knowledge test preparation.

Built to the FAA’s Private Pilot Airplane Airman Certification Standards (FAA-S-ACS-6C), with every in-scope knowledge and risk management element taught, practice questions that use the same FAA testing supplement figures handed out at the test center, and a practice test weighted by area the way the FAA weights the PAR test.

SkyLock Media founder flying a small airplane above a green landscapeAvailable now

FAA Private Pilot Airplane (PAR) knowledge test

Private Pilot Knowledge Test Prep

Regulations, airspace, weather, performance and weight and balance, sectional charts, navigation, airport operations, aerodynamics, human factors and emergencies — taught from the current regulations, FAA handbooks and the AIM, and practised on the figures the real test uses.

  • 20 lessons and 118 instructional sections
  • 340 original, objective-linked questions
  • with 18 graded lessons covering every PAR area of operation
  • A 60-question, 2-hour practice test in the FAA area weighting
  • Two complete lessons and a preview test free, no card
Log inCreate accountAlso free: the complete Excel Master Class
Independent preparation. SkyLock Media is not affiliated with, endorsed by, or sponsored by the FAA.
20complete lessons
340original questions
40questions on FAA test figures
60question timed practice test
See screenshots, what’s included, and pricing

Inside the course

Read the chart. Know the rule. Practise the real figures.

Every lesson teaches its Airman Certification Standards elements in plain language and names the terms the test uses, then checks you with original questions — many built on the same FAA testing supplement figures you are handed at the test center — each with an explanation for the right answer and every wrong one.

Private Pilot curriculum listing the certificates and currency, airworthiness, aerodynamics, and aircraft systems lessons, each with its question count and study and quiz links
A full curriculum built on the Private Pilot ACS
Private Pilot airworthiness quiz question on whether a registration certificate and a standard airworthiness certificate are still valid, with a confidence rating
Scenario questions that test the rule, not the wording
Private Pilot vocabulary flashcard defining the PAVE risk-assessment checklist, with Again and Got it buttons and a progress bar
Every lesson's terms as flashcards
Private Pilot vocabulary cards defining airworthy, standard and special airworthiness certificates, registration, annual and 100-hour inspections, airworthiness directives, and SAIBs, each with its regulation
Precise definitions tied to the regulation
Private Pilot lesson close with answer-before-revealing retrieval questions, a list of exam traps on airworthiness, and a link to the lesson quiz
Retrieval checks and exam traps in every lesson
Private Pilot compiled exam traps page gathering every lesson's traps in one place for a final review pass
Every exam trap gathered for final review

Free preview or complete access

Try two Private Pilot lessons free. Choose the study window that fits.

Create a SkyLock Media account to study Lessons 7 and 12, answer one-third of each lesson quiz, and take a 10-question preview test with no payment or time limit. Both paid plans unlock the complete course through a one-time purchase with no automatic renewal.

Free preview$0No time limit
  • Complete Lessons 7 and 12: weather services and airport operations
  • One-third of both lesson quizzes
  • 10-question cumulative preview test
3-month access$49.993 months of access

Focused access for a student pilot planning to take the knowledge test within the next three months.

  • All 20 lessons and 340 original questions
  • 40 questions on the FAA testing supplement figures
  • Every lesson quiz and unlimited 60-question timed practice tests
  • Explanations for the right answer and every wrong one
  • One-time payment with no automatic renewal
Annual access$99.9912 months of access

A full year, for studying alongside flight training and keeping the material fresh for the checkride.

  • All 20 lessons and 340 original questions
  • 40 questions on the FAA testing supplement figures
  • Every lesson quiz and unlimited 60-question timed practice tests
  • Explanations for the right answer and every wrong one
  • One-time payment with no automatic renewal
View Private Pilot purchase plans

Explore the curriculum

Start two complete Private Pilot lessons free.

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Why trust our courses

Useful preparation, built around the credential.

Every SkyLock Media course is its own focused study product, written from public standards and organised around the exam it prepares you for. The depth changes with the credential. The method does not.

6
credential courses
100
written lessons
2,200
practice questions
0
reproduced exam questions
SkyLock Media founder in a tuxedo celebrating in front of a chalkboard that reads I got the job
01

Built around the credential's own outline

Each course follows the domains and objectives the certifying body publishes. Every one of the 2,200 questions is mapped to a stated objective, so you always know which requirement you are being tested on and where you are weak.

02

Every option explained, not just the key

Submitting an answer shows why the correct choice is correct and why each other option is wrong. Every question also names the exam trap it is built on -- the misreading that makes a wrong answer look right.

03

Written from public sources, and cited

Lessons are written from official sources -- federal publications, published standards, and, for Excel Master Class, Microsoft's own exam skills outline and product documentation. Every lesson names the documents behind it, and every course publishes the full list on its own references page, so you can check any claim against the source rather than taking ours for it.

04

Original questions, never recycled ones

Nothing here is reproduced or paraphrased from a certifying body's exam. Every question is written for this course, which is how each one can be explained rather than just marked right or wrong.

05

Practice in the format you will actually face

Part 107 questions are three-option, the way the FAA writes them. PMP includes the pull-down, matching, and point-and-click formats the real exam uses. Each course finishes with full-length cumulative tests rather than another lesson quiz.

06

The answer key never reaches your browser

Grading happens on our server. Correct answers and explanations are not hidden in the page you are sent, so they cannot be read ahead of time and a practice score measures what you actually know.

07

One account, every course, no subscription

A single sign-in covers all six courses. Part 107, Private Pilot, Six Sigma, CPC, and PMP each have a free preview that needs no payment and no card, with a one-time purchase for a stated term when you want the complete course -- nothing renews itself, and nothing bills you again without you deciding to. Excel Master Class is free while it's new: create an account and the whole course is open, no preview boundary and nothing to buy.

What buying opens

The preview shows you the method. The course gives you all of it.

Try any course first: complete lessons and their quizzes, no payment and no card. Buy when the material is the way you want to study, not before.

The complete curriculum

Every lesson in your course unlocks, not a sample -- 15 to 28 of them depending on the credential, with the diagrams, worked examples, and glossary that go with each one.

The whole question bank

Every question in the course, each with its full explanation and exam-trap note, plus the lesson quizzes that draw from them.

Exam-day rehearsal

Full-length cumulative practice tests under exam conditions, drawn fresh on every attempt in the real test's own proportions, with your score broken down by exam area.

Proof for your application

The PMP Prep + Certificate option records your study time as you go and issues a certificate documenting the 35 contact hours PMI requires before you can apply.

About SkyLock Media

Independent study products for meaningful next steps.

SkyLock Media develops clear, practical learning tools for professional certification and licensing exams. Each course has its own focused experience, while this site serves as the home for the growing collection.

Contact SkyLock Media

Questions

How the course hub works.

How do SkyLock Media courses work?

SkyLock Media offers focused study products for professional certification and licensing exams. Choose Part 107, Private Pilot, Six Sigma, CPC, project management certification prep, or Excel Master Class to review its curriculum, lessons, and available practice resources.

Do I need an account on this website?

Create one SkyLock Media account to access Part 107, Private Pilot, Six Sigma, CPC, project management certification prep, Excel Master Class, and future courses. Your My Courses page shows every active preview and purchase.

Where do I access a course?

Select Part 107 Test Prep, Private Pilot Knowledge Test Prep, Six Sigma Test Prep, CPC Exam Prep, Project Management Certification Prep, or Excel Master Class from this page, then use the same SkyLock Media login for every course.

Which study products are available?

Part 107 Test Prep, Private Pilot Knowledge Test Prep, Six Sigma Test Prep, CPC Exam Prep, Project Management Certification Prep, and Excel Master Class are available now, with additional professional study guides planned for the future.

What does each course cost?

Part 107 Test Prep is $59.99 for 3 months or $109.99 for 12 months. Six Sigma belts range from $49.99 (White) to $99.99 (Master Black), each for 3 months of access. CPC complete-course access is $99.99 for 3 months or $169.99 for 12 months. Project management certification prep is $89.99 for 6 months, or $169.99 for 12 months with the 35-hour training certificate. Private Pilot Knowledge Test Prep is $49.99 for 3 months or $99.99 for 12 months. Each of those five includes a free preview with no time limit. Excel Master Class is free: the whole course is open to any signed-in account, with no payment and no time limit.

Can I try a course before I buy it?

Yes. Part 107, Private Pilot, CPC and PMP each open two complete lessons, one-third of each of those lesson quizzes, and a 10-question preview test. Six Sigma opens one lesson from every belt, a 10-question quiz and a 20-question practice test. Every preview is free with a SkyLock Media account, needs no card, and has no time limit, and your progress carries over if you buy the course.

Is the Excel Master Class really free?

Yes. The complete Excel Master Class is free with a SkyLock Media account: all 17 lessons, 131 practice questions and the cumulative practice exam for the Microsoft Office Specialist: Excel Expert (MO-211) exam, plus beyond-the-exam tracks on Power Query, Power Pivot and DAX. There is nothing to buy, no card to enter and no time limit.

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Choose your study guide

Prepare with a clear plan. Advance with confidence.

One SkyLock Media account unlocks free previews of Part 107, Private Pilot, Six Sigma, CPC, and project management certification prep, plus the entire Excel Master Class course — no payment required to start.

Log inCreate account
Professional studying certification materials in a library