Tutorials
1- more than 30 video tutorials for free blender GE
it is sticky at the game engine forum
2- the train method blender GE
3- enhancing blender GE physics blender GE
4- file management system blender GE
5- making car skid (a .blend file) blender GE
6- face texture painting (photoshop & Gimp)
7- Frozen reflection (materials)
8- modeling and texturing a racing track blender ge