The Linux Command Line, 2nd Edition
William Shotts
Linux Basics for Hackers
OccupyTheWeb
Practical Malware Analysis
Michael Sikorski and Andrew Honig
Attacking Network Protocols
James Forshaw
Black Hat Go
Tom Steele & Chris Patten & Dan Kottmann
Web Security for Developers
Malcolm McDonald
The Hardware Hacker
Andrew Bunnie Huang