Modern Python Cookbook
Steven F. Lott
Beginning Modern Unix
Manish Jain
The Shellcoder's Handbook
Chris Anley & John Heasman & Felix Lindner & Gerardo Richarte
Vi IMproved--VIM
Steve Oualline
CCNA 200-301 Official Cert Guide Library
Wendell Odom & Jason Gooley & David Hucaby