GET THE PDF HERE: http://wstein.org/books/sagebook/sagebook.pdf

This is a book about Sage http://sagemath.org, which is a large free open source software program for computational mathematical.

The audience of this book is undergraduates learning Sage and Python, who have previous computer programming experience and want to write fast powerful programs and really understand their tools. The author strongly believes people should learn to deeply understand their tools. This is a big motivation for open source in the rst place, and also a theme of the book. This book is also far from self contained, and the reader will be repeatedly pointed to other specic tutorials and reference materials.

The license is really http://creativecommons.org/licenses/by/3.0/ but that's not an option with Google Code.