Offensive Security

Resources for offensive security training. Compiled by the members of Root66tulsa Cyber Clubs.

Multi-Discipline

OverTheWire - Learn linux basics!

Tryhackme - A guided CTF style learning platform

Hack The Box - Features both challenge machines and guided learning paths.

Web Application Security

PortSwigger Web Security Academy - A free learning platform that focuses on web application security.

API Security

APIsec University - A free learning platform that focuses on API penetration testing.

Mobile Application Security

Intro to Mobile Pentesting - Blog post by Hack The Box on getting started with mobile application security.

Misc

IppSec - In Depth Walkthroughs of retired Hack The Box machines.

Disclaimer: Usage of offensive security tools against systems you do not own or have explicit permission to perform testing against is illegal and unethical.
The golden rule: No Crimesies.