I am not sure that many people are aware of this, but since Blender Game Kit 2 has come out, Blender Game Kit 1 is now free! Of course, it is outdated (Blender 2.25?), but it does a GREAT job teaching about LogicBricks.http://download.blender.org/documentation/gamekit1/
Here is link that goes to a BlenderNation "link-portal" for the Blengine.http://blenderartists.org/forum/showthread.php?t=11430
Hope you guys can find these links somewhat useful!
"Along with 'Antimatter,' and 'Dark Matter,' we've recently discovered the existence of 'Doesn't Matter,' which appears to have no effect on the universe whatsoever." -The 5th Wave