https://medium.com/@1chidan/zero-to-oscp-concise-edition-b5ecd4a781c3
- https://linuxjourney.com
- https://kali.training/downloads/Kali-Linux-Revealed-1st-edition.pdf
- https://www.cybrary.it/course/cisco-ccna/
- https://www.cybrary.it/course/ethical-hacking/
- https://overthewire.org/wargames/bandit/
- https://www.codecademy.com/
- https://www.offensive-security.com/metasploit-unleashed/