Hey man Blender Game kit and demo of first edition are now free make sure you downloadcauz
the
Carsten Wartmann, the great writer of many blender books, is now officially writing the second edition of the Blender Gamekit books, the new books will cover the new functionality of the new Blender.
http://download.blender.org/documentation/gamekit1/
gamekit1-book.zip
gamekit1-cdrom.zip
