Metasploit
David Kennedy & Jim O'Gorman & Devon Kearns & Mati Aharoni
Shell Scripting
Steve Parker
Nmap: Network Exploration and Security Auditing Cookbook
Paulino Calderon
Intro to Java Programming, Comprehensive Version
Y. Daniel Liang
Hands-On AWS Penetration Testing with Kali Linux
Karl Gilbert & Benjamin Caudill
grep Pocket Reference
John Bambenek
Essential System Administration
Æleen Frisch
Cryptography Engineering
Niels Ferguson & Bruce Schneier & Tadayoshi Kohno
Beginning Modern Unix
Manish Jain
Beginning Linux Programming
Neil Matthew & Richard Stones
Assembly Language Step-by-Step
Jeff Duntemann
The Art of Memory Forensics
Michael Hale Ligh & Andrew Case & Jamie Levy & AAron Walters
Applied Cryptography
Bruce Schneier
Advanced Penetration Testing
Wil Allsopp
Accelerating Development Velocity Using Docker
Kinnary Jangla