Linux Pocket Guide, 3E
Daniel J. Barrett
3D Game Environments
Luke Ahearn
Cracking Codes with Python
Al Sweigart
Honoring the Code
Barton, Matt
Unauthorised Access
Wil Allsopp
Cryptography Engineering
Niels Ferguson & Bruce Schneier & Tadayoshi Kohno
CCNA Certification Practice Tests
Jon Buhagiar