This book is released under the Creative Commons Attribution-Noncommercial-Share Alike License.
This means that you have certain privileges and a few restrictions.
You are able:
to Share — to copy, distribute and transmit the work
to Remix — to adapt the work
Under the following conditions:
Attribution. The copyright remains with me and any derived works must mention that it is derived from my copyrighted material.
Noncommercial. You may not use this work for commercial purposes of any kind.
Share Alike. If you alter, transform, or build upon this work, you may distribute the resulting work only under the same license as this one.
License overview: http://creativecommons.org/licenses/by-nc-sa/3.0/