Hands-On Software Engineering with Python
Brian Allbee
CCNA Certification Practice Tests
Jon Buhagiar
Vi IMproved--VIM
Steve Oualline
Python Playground
Geeky Projects for the Curious Programmer
Introduction to Sociology 2e
Heather Griffiths & Nathan Keirns & Gail Scaramuzzo & Susan Cody-Rydzewski & Eric Strayer & Sally Vyrain