OpenCV 3 Computer Vision with Python Cookbook
Aleksei Spizhevoi & Aleksandr Rybnikov
Let's Go!
Alex Edwards
Python Playground
Geeky Projects for the Curious Programmer
Applied Cryptography
Bruce Schneier
Introduction to Sociology 2e
Heather Griffiths & Nathan Keirns & Gail Scaramuzzo & Susan Cody-Rydzewski & Eric Strayer & Sally Vyrain