GNU Octave by Example
Ashwin Pajankar & Sharvani Chandu
99 Bottles of OOP (Milk, Ruby)
Sandi Metz & Katrina Owen & TJ Stankus
PHP Objects, Patterns, and Practice
Matt Zandstra
Head First C#
Andrew Stellman & Jennifer Greene
head first (4)
Art 101
Eric Grzymkowski
Art Direction for the Web
Andy Clarke