Learning Go

The language, not the game :)

The book is available here.

How to Sell your Game

Free PDF E-book: http://www.amaranthia.com/downloads/How-to-Sell-your-Game.pdf

Abstract Algebra: Theory and Applications

Available for free here: http://abstract.ups.edu/download.html

The Scheme Programming Language

The Scheme Programming Language - fourth edition

Available for free here
Or you can order the paperback version on Amazon: The Scheme Programming Language, 4th Edition

Queuing Theory Books

A large list of online Queuing Theory books can be found here.

Dietary Guidelines for Americans 2010

Good to read before you go shopping.

Download from here.

Use the Index Luke

Use The Index, Luke is a free guide to SQL performance for developers.

Unlike many other SQL performance tuning resources, Use The Index, Luke avoids unnecessary details about database internals but highlights the most important topic for fast SQL: proper indexing.

http://use-the-index-luke.com/