Best CompTIA A+ Study Resources (2026 Comparison Guide)

If you're preparing for the CompTIA A+ exam, choosing the right study materials can save you weeks of frustration — and potentially hundreds of dollars in retake fees.

This guide compares the most recommended books, practice exams, and free resources so you can choose the best fit for your learning style.

Quick Comparison

Resource	Best For	Format	Difficulty
CompTIA A+ All-in-One	Beginners	Book	Medium
Dion Training Practice Exams	Practice Focused	Online Exams	High
Professor Messer	Budget Learners	Free Video	Medium

📘 Best Overall Study Guide

CompTIA A+ All-in-One Exam Guide (by Walker Bridge)

Best for first-time learners who want detailed explanations and structured learning.

Clear explanations
Covers Core 1 & Core 2
Ranked as best-seller and rated 4.7 stars on Amazon

See Why This Is the Best-Selling A+ Book →

🧪 Best Practice Exams

Dion Training A+ Practice Exams

Best for students who want exam-style questions and realistic simulations.

Closest to real test wording
Great for identifying weak areas
High exam alignment

View Most Realistic A+ Practice Exams →

🎥 Best Free Option

Professor Messer Free A+ Course

Best for students on a tight budget or who prefer video learning.

Access Free A+ Video Course →

How to Choose the Right Option

If you're new to IT → Start with the CompTIA A+ book.
If you already understand basics → Focus on practice exams.
If you prefer video → Use Professor Messer as primary.
If you failed once → Add heavy practice exam repetition.

Final Recommendation

For most students, the best strategy is:

1 Study Guide + 1 Practice Exam Provider