Finishing Professor Messer's video course is a milestone — but it's the midpoint of your study journey, not the end. The biggest mistake post-Messer candidates make is treating completion of the videos as readiness for the exam. It's not. Video comprehension and exam performance are different skills, and the gap between them is where most first-try failures happen.
This guide gives you the exact post-video sequence that turns "I watched everything" into "I passed on the first try."
After finishing Professor Messer's videos, do not book the exam yet. Follow this 5-step sequence: (1) take a baseline 90-question practice exam to measure where you are, (2) add a second practice question source for variety, (3) do dedicated PBQ practice, (4) review weak domains with the matching Messer video, (5) book the exam only after you score 85%+ on a fresh full-length practice test.
The 5-Step Post-Video Sequence
Step 1 — Take a baseline practice exam. Full-length, timed, untimed by-domain summary. Don't study for it. The point is to find your actual starting score, not impress yourself.
Step 2 — Add a second practice source. Messer's 270 questions aren't enough exposure. Add either Jason Dion's Udemy practice pack or a free adaptive tool. Variety > volume from a single source.
Step 3 — Do dedicated PBQ practice. Messer's content skips this entirely. Use CompTIA's free PBQ samples, Dion's practice exams, or TryHackMe rooms for the relevant cert. 5–10 hours minimum.
Step 4 — Review weak domains. For any domain where you scored below 80%, rewatch the corresponding Messer videos at 1.5x speed. Then take 30 fresh questions on just that domain. Repeat until you're consistently above 85%.
Step 5 — Book the exam. Only when a fresh, full-length practice exam from a source you've never seen scores 85%+. Schedule 5–7 days out. Use that week for light review and sleep, not cramming.
What Not to Do
Don't rewatch every video. A second full pass is the lowest-yield use of your time. Use practice questions to identify the 10–15% of content you actually misunderstood, then rewatch only those.
Don't cram new sources in the final week. Switching practice tools 3 days before exam day adds anxiety without adding readiness. Pick your second source early.
Don't skip PBQ practice because Messer didn't cover them. This is the single most common reason post-Messer candidates fail.
Don't take the same practice exam twice. You're measuring memorization, not mastery. Always use a fresh exam for readiness checks.
Exam Week Checklist
The 5 days before exam day: - Day -5: Last fresh full-length practice exam. Must score 85%+. - Day -4: Review wrong answers only. Build a one-page "things I got wrong" sheet. - Day -3: Light review of that one page. PBQ practice (1 hour). - Day -2: Re-read your own acronym sheet. No new material. - Day -1: Rest. Confirm exam logistics (ID, location/online setup). Sleep 8 hours.
If your day -5 practice score is below 80%, push the exam by 1–2 weeks. The reschedule fee is dramatically cheaper than a retake.
Pro Tips
Your baseline practice exam score predicts your real exam score within ±5% — trust it.
PBQs are scored heavily on the real exam. 5 hours of PBQ prep often moves your final score by 5+ points.
Take at least one practice exam at the same time of day as your scheduled real exam.
Keep one "fresh" full-length practice exam unopened until day -5 of exam week.
A one-page handwritten weak-area sheet outperforms 50 pages of typed notes for last-week review.
Common Mistakes to Avoid
Booking the exam right after finishing videos, before any practice exam.
Skipping PBQ practice entirely.
Re-taking the same practice exam 3+ times and confusing memorization with mastery.
Pulling an all-nighter the night before — sleep is the highest-yield exam-week activity.
Switching to a new study source 48 hours before exam day.
Frequently Asked Questions
No — finish at least 2 weeks of practice exams and weak-area review first. Booking too early is the #1 cause of first-try failures.
At least 4–6 full-length, fresh practice exams across the 2–3 weeks before exam day.
Jason Dion's Udemy pack is the most exam-realistic. Free adaptive tools work for multiple-choice variety.
Use CompTIA's free PBQ samples, Dion's practice exams (include PBQs), or TryHackMe rooms for the relevant cert.
85% or higher on a full-length exam from a source you haven't seen before.
2–3 weeks of dedicated practice and review is the typical sweet spot.
Related Resources
Free CompTIA Practice Professor Messer Honest Review Professor Messer Alternatives Professor Messer Practice Exams Best Way to Use Practice Exams Performance-Based Questions GuidePractice for 25+ Certifications—Free
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