- The Hacker Playbook 2: Practical Guide To Penetration Testing
- The Basics of Hacking and Penetration Testing, Second Edition: Ethical Hacking and Penetration Testing Made Easy
- Penetration Testing: A Hands-On Introduction to Hacking
- Social Engineering: The Art of Human Hacking
- Hacking: The Art of Exploitation, 2nd Edition
- Ethical Hacking and Penetration Testing Guide
- OWASP Testing Guide (A must read for web application developers and penetration testers)
- Infosecinstitute (http://resources.infosecinstitute.com/)
- Pentester Lab (https://pentesterlab.com/)
- Complete Penetration Testing Tutorials by OWASP (https://www.owasp.org/index.php/Web_Application_Penetration_Testing)
- Silesia Security Lab (https://silesiasecuritylab.com/blog/)
- Rafay Hacking Articles, a great blog (http://www.rafayhackingarticles.net/)
- Troyhunt (https://www.troyhunt.com/)
- FiringRange (https://public-firing-range.appspot.com/)
- Computer Systems Security, MIT (http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-858-computer-systems-security-fall-2014/video-lectures/)
- Web Hacking (https://www.youtube.com/playlist?list=PLJM73L2pQRd4lXBZjsHAmeEqsn5pENXxN)
- Ethical Hacking, A Comprehensive Playlist covering almost everything (https://www.youtube.com/playlist?list=PLkRo97mCIn9lgvE7AskNsmwJVOlJX2zaI)
- Security Tube (http://www.securitytube.net/)
- Kevin Mitnick: Live Hack at CeBIT (https://www.youtube.com/watch?v=Q7G3kKRdUl4)
- Ghost in the Cloud, Kevin Mitnick (https://www.youtube.com/watch?v=76yrWGzScgI)
- Kevin Mitnick | Talks at Google (https://www.youtube.com/watch?v=aUqes9QdLQ4)
- Complete Free Hacking Course: Go from Beginner to Expert Hacker Today (https://www.youtube.com/watch?v=7nF2BAfWUEg)