YouTube is one of the best free resources for learning cybersecurity — if you know which channels are actually worth your time. I've gone through dozens of channels while studying for TryHackMe rooms and building my skills as a CS student. Here are the ones I keep coming back to.
How this list is ranked: Channels are ranked by how useful they are for beginners building real skills — not just subscriber count. Every channel on this list is completely free.
If you're studying for CompTIA Security+, Professor Messer is non-negotiable. His free Security+ course covers every exam objective in clear, structured videos. Thousands of people have passed Security+ using only his free content. No fluff, no filler — just exactly what you need for the exam.
NetworkChuck makes complex topics genuinely fun. His videos on networking fundamentals, Linux basics, and ethical hacking are some of the most beginner-friendly content on YouTube. If you feel intimidated by cybersecurity, start here. His energy is contagious and his explanations actually stick.
John Hammond is a security researcher who posts CTF walkthroughs, malware analysis, and deep dives into real vulnerabilities. His content is more technical than most — perfect once you've got the basics down. Watching his CTF videos while following along on TryHackMe or HackTheBox is one of the best ways to level up fast.
David Bombal covers networking and ethical hacking with a strong focus on practical skills. He interviews top security professionals and posts detailed tutorials on tools like Wireshark, Nmap, and Python for hacking. Great for bridging the gap between networking knowledge and cybersecurity work.
Heath Adams (The Cyber Mentor) runs TCM Security and posts some of the best free penetration testing content on YouTube. His free Practical Ethical Hacking course on YouTube covers Active Directory, web app testing, and more. If you're serious about becoming a penetration tester, this channel is essential.
IppSec posts detailed walkthroughs of retired HackTheBox machines. If you're stuck on a box or want to see how an experienced hacker approaches a problem, IppSec's methodical breakdowns are invaluable. More advanced than the other channels — work up to this one after you've got TryHackMe basics down.
LiveOverflow covers advanced topics like binary exploitation, reverse engineering, and CTF challenges. His "How to get into CTFs" series is a great starting point. The content is technical and assumes some background knowledge — save this one for when you're past the beginner stage.
Gerald Auger at Simply Cyber focuses on the career side of cybersecurity — SOC analyst roles, GRC, how to break into the industry without experience, and resume tips. If you're trying to land your first cybersecurity job, this channel gives you the realistic picture that most content glosses over.
Hak5 covers physical security, hardware hacking, and creative attack tools. It's less structured than the other channels but great for expanding your perspective on what cybersecurity actually covers. Their Bash Bunny and Rubber Ducky content is particularly interesting once you understand the basics.
Computerphile is run by the University of Nottingham and covers computer science concepts including cryptography, SQL injection, password security, and more. The videos are short, well-explained, and perfect for understanding the theory behind cybersecurity concepts you'll encounter in practice.
If you're brand new, don't just watch randomly. Follow this order to build skills progressively:
For beginners, YouTube combined with hands-on platforms like TryHackMe is genuinely better than most paid courses. The channels on this list cover everything in CompTIA Security+, penetration testing fundamentals, and CTF skills — all for free.
That said, structured paid courses from TCM Security or platforms like the ones we've reviewed here are worth it once you know what you want to specialize in. Check out our full guide to the best free cybersecurity courses for more options.
You don't need to spend a single dollar to learn cybersecurity. Between these YouTube channels, TryHackMe's free tier, and the resources on this site, you have everything you need to go from zero to job-ready. The only thing that separates people who make it from those who don't is consistency — show up every day, even if it's just 30 minutes.
Your next step: Subscribe to NetworkChuck and watch his Linux basics series today. Then pair it with TryHackMe's free Linux Fundamentals path for hands-on practice. That combo will build your foundation faster than anything else.