Nmap: Network Exploration and Security Auditing Cookbook
Paulino Calderon
Applied Cryptography
Bruce Schneier
Hacking the Cable Modem
DerEngel
Linux® Command Line and Shell Scripting Bible
Richard Blum
Introduction to Sociology 2e
Heather Griffiths & Nathan Keirns & Gail Scaramuzzo & Susan Cody-Rydzewski & Eric Strayer & Sally Vyrain