Getting Started With Raspberry Pi: Getting to Know the Inexpensive ARM-Powered Linux Computer

I love this book. I wish I had a raspberry pi so that I could I work with it along side the book.

This is a very useful and friendly book introducing the raspberry pi and worth buying. Beware, though, there are errors in some code examples in the book. On the bright side, you will probably have the added bonus of increased familiarity with the Python programming language when you successfully debug them.