| Professor Messer |
Basic IT, A+ certification |
Free foundational IT and networking training |
| Mike Meyers on Udemy |
IT and networking courses |
Paid courses for foundational skills |
| TCM Security Academy |
Practical IT and hacking courses |
Free and paid courses including ethical hacking and help desk |
| Cisco Packet Tracer |
Networking simulation |
Tool for practicing networking concepts |
| Linux Journey |
Linux fundamentals |
Free Linux learning resource |
| Over The Wire |
Linux and security challenges |
Hands-on Linux and security exercises |
| Team Treehouse |
Programming |
Paid video-based programming courses with free trial |
| TryHackMe |
Ethical hacking, CTF |
Free and paid task-oriented hacking exercises |
| Hack The Box |
CTF and hacking |
Paid platform with hacking challenges |
| Vuln Hub |
CTF style hacking |
Downloadable vulnerable machines for practice |
| PortSwigger Academy |
Web app hacking |
Free labs and lessons; creators of Burp Suite |
| Hacker 101 |
Bug bounty and web hacking |
Video lessons and CTF challenges |
| Bug Crowd University |
Bug bounty training |
Free and paid video lessons |
| PentesterLab |
Web security exercises |
Free and pro web hacking exercises |
| OWASP (OAS) |
Web app security |
OWASP Top 10 and Web Security Testing Guide |
| HackerOne Hacktivity |
Bug bounty write-ups |
Public bug bounty reports and exploit walkthroughs |
| Discord Community |
Cybersecurity networking |
Large community for learning, career advice, and job opportunities |
| PortSwigger Web Academy |
AI and LLM hacking |
Emerging modules on hacking AI and LLMs |