The Linux Command Line, 2nd Edition
William Shotts
FIST ULTRA EDITION form fillable character sheet v1.1
Claymore
Practical Binary Analysis
Dennis Andriesse
Learning the bash Shell
Cameron Newham
Black Hat Go
Tom Steele & Chris Patten & Dan Kottmann
Web Security for Developers
Malcolm McDonald
The Hardware Hacker
Andrew Bunnie Huang
The Car Hacker's Handbook
Craig Smith
Rootkits and Bootkits
Alex Matrosov, Eugene Radionov, Sergey Bratus
Real-World Bug Hunting
Peter Yaworski
Penetration Testing: A Hands-On Introduction to Hacking
Gorgia Weidman
Metasploit: The Penetration Tester's Guide
David Kennedy, Jim O'Gorman, Devon Kearns, Mati Aharoni
Linux Basics for Hackers
OccupyTheWeb
Hacking: The Art of Exploitation
Jon Erickson
Attacking Network Protocols
James Forshaw