An intermediate-to-advanced book created using an open-source development process. Published under the Creative Commons Attribution-Share Alike 3.0 license.
Please Note: This book is in early development, so expect to find many incorrect and incomplete portions.
The above link will take you to the development home page. In the upper right area of that page, you will see a link that says "download." (You can choose your desired compression format). Once you unpack the download, you will find these directories in the root directory:
The downloadable book contains a chapter called Developer Guide which gives details on how to get started if you want to help develop the book.