Resources for CompTIA Security+

Roisin GleesonRoisin Gleeson
3 min read

I have been studying for Security+ since January. I am planning to sit the exam this month. I have used some different resources to study and wanted to share some I have used and some that are highly used by others.

For my study I used:

  • Professor Messer’s Security+ Videos (YouTube)

  • Github

  • Chatgpt

  • ecollege

  • Measureup through ecollege

These were free for me and helped me to gain an understanding. I mainly used Professor Messer’s videos and any concepts I did not understand I used Chatgpt. Github has some free books which I found helpful. Ecollege helped with providing resources but I found their questions to be repetitive and I learned the answer off instead of learning why the answer was correct.

There are other resources that are highly praised for helping to pass Security+.

Free

  • Professor Messer Youtube

  • CompTIA official exam objectives

  • Reddit - r/CompTIA

  • ExamCram Quizlit

  • OSINT Resources like Tryhackme or OverTheWire

Paid

  • Jason Dion’s Security+ course on Udemy

  • MeasureUP

  • CompTIA official practice test

  • CompTIA CertMaster learn + labs

  • Mike Meyers’ Total Tester and Total Seminars Course

Professor Messer

  • There are free videos on his YouTube channel which go through every single part of the exam, as well as monthly study sessions.

  • On his website there are paid courses, practice exams and books by him that can help people if the videos are not enough

  • I found this to be easy to follow

  • Clear explanations

  • Real world examples

  • Many people passed the exam with just this resource

CompTIA Official Exam Objectives

  • Free

  • Official blueprints of what is on the exam (a good starting place)

  • I used it to track my progress and to make sure I was not missing parts

Reddit

  • r/CompTIA

  • Free

  • People give real experiences, their study plan, what they wish they did differently

  • Sharing resources (often free)

  • Success stories to help with your own motivation

ExamCram Practice Questions

  • This is on quizlet

  • Flashcards and definitions based on key topics

  • Helps to reinforce memorisation of terms and acronyms

  • Can be useful for quick review sessions

Open Source Intelligence (OSINT) Resources

  • TryHackMe, OverTheWire

  • Can be free

  • Good for practicing basic linux, networking and security labs

  • Helpful if you learn better by doing

  • Can align with practical concepts covered in Security+

Jason Dion’s Youtube

  • Sample video from course

  • Excellent explanation for trickier topics like access control, cryptography etc

Jason Dion Security+ Course on Udemy

  • Costs about €15–€20 (during sales), outside of sale the whole bootcamp is about €100 euro

  • A lot of real world examples

  • Practice questions, quizzes, and downloadable slides

  • Especially helpful for learners who need structure

MeasureUp or CompTIA Official Practice Tests

  • costs about €80 - €100

  • Closest to the real exam in terms of difficulty and format

  • Can help with timing and identifying weak spots

  • Strong indicator of exam readiness

Mike Meyers’ Total Tester and Total Seminars Course

  • costs €15 - €20

  • Engaging delivery

  • Covers the concepts in beginner friendly way

  • Comes with practice questions (1 set)

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Written by

Roisin Gleeson
Roisin Gleeson

Hi, I’m Roisin, and this is my journey into cybersecurity. With a background in adult education, I’ve always enjoyed problem-solving and hands-on learning. Now, I’m applying that mindset to cybersecurity, where I’m exploring everything from ethical hacking to Python scripting. I’m currently working on my CompTIA Security+ certification, with plans to dive into CySA+ and PenTest+. I’m also learning Linux and building a portfolio of security projects to develop my skills. This blog is where I document my progress, challenges, and lessons learned—whether it’s breaking down security concepts, sharing Python scripts, or writing about real-world security issues. Follow along as I grow from learner to cybersecurity professional—one step at a time.