There really isn't any tutorial that I know of. Not many people have used it. I have used it before though, but only in a way that supports 2 player multiplayer and it is buggy too. I would say take a look at the code, but the code for PONG 3D is impossible to read as I didn't really make it to be readable, just efficient. Also you'll need a 2nd system for testing purposes if you don't have 1.