Python Playground
Geeky Projects for the Curious Programmer
Hacking the Cable Modem
DerEngel
grep Pocket Reference
John Bambenek
RTFM - Red Team Field Manual
Ben Clark
Introduction to Sociology 2e
Heather Griffiths & Nathan Keirns & Gail Scaramuzzo & Susan Cody-Rydzewski & Eric Strayer & Sally Vyrain