Professor Messer offers free A+, Network+ and Security+ video courses. Optional paid products include course notes, practice exams and study bundles.
A learner asking about the paid notes got replies from buyers who found them useful for Network+ and A+. One commenter said the notes were not necessary if you already use his videos and a Dion practice exam set.
In an A+ 1102 thread, two commenters said Messer's practice exams were close to the real exam, with clear explanations. Others said to stay with Dion or use a book. The thread is split.
A learner with no IT background found the videos dry and technical. Replies suggested faster playback, picking topics from the exam objectives, or a more casual course such as Mike Meyers.
121 short videos, about 15 hours in total, that follow the SY0-701 objectives one by one, so you always know where you are in the syllabus. Messer also posts free study group replays and sells 96-page course notes and practice exams separately.
Great fit if you want a free, focused course and can organize your own practice
Poor fit if you are new to IT and want concepts built up slowly; start with Mike Meyers
Three exams written in the concise 'best answer' style of the real questions, with a reason for each answer. It is a PDF, so you time and score yourself, and its PBQs are easier than the real ones.
Great fit if you want wording close to the real multiple-choice questions at a low price.
Poor fit if you want auto-timed, auto-scored tests or realistic PBQs; use Dion or Boson.
Free videos numbered to match each exam objective, 63 for Core 1 and 74 for Core 2, about 24 hours in total. Messer sells practice exams separately.
Great fit if you want a complete course at no cost and will add your own practice tests
Poor fit if you want built-in quizzes or labs; choose CertMaster Learn
Three 90-question exams per core with multiple-choice questions, some PBQs and a reason for each answer. It is a PDF, so you time and score yourself. Candidates call its wording the closest to CompTIA's.
Great fit if you use Messer's free videos and want exam-like wording and some PBQ practice at a low price.
Poor fit if you want auto-timed, auto-scored tests or more than 270 questions per core; add Dion's exams.
A free video course of about 15 hours that follows the Security+ SY0-701 objectives, for after you finish this program. Professor Messer publishes the whole course free.
Great fit if you are taking Security+ next
Poor fit if you are not planning to take Security+
A free video course for CompTIA A+ Core 1 of about 10 hours, with a matching Core 2 course on the same site. Google and CompTIA offer a dual credential for completing this certificate and passing both A+ exams.
Great fit if you plan to take CompTIA A+ next
Poor fit if you are not planning to take A+; stay with the Google program
Free objective-by-objective video lessons that follow the N10-009 outline, with monthly study groups and a community. Messer also sells course notes separately for Network+.
Great fit if you want a focused course at no cost
Poor fit if you want detailed explanations and a practice exam in one purchase; choose Dion
Yes. The full video course for each CompTIA exam is free on YouTube and professormesser.com. Notes, practice exams, audio and bundles are optional paid products.
For Security+ SY0-701, course notes are $30, practice exams $30, both together $50, the audio course $70 and the full success bundle $119. Printed books are $50 each. Network+ has no practice exam product.
Refund terms for the digital products are not stated. Exam vouchers bought on the site are non-refundable.
Messer's videos are free and his paid add-ons are cheaper. Dion's course is paid and includes its own practice exams. Learners disagree on whose practice exams are closer to the real test.
Last updated October 2026
