Another forum I belong to has a member who has done an instructional video for learning BIAB. I haven't gotten it yet, since I'm in the process of a move to Arizona. I've heard good things about it and it has supposedly been cleared by PG music. You can check it out if you've a mind to at

http://www.rickcampbellworld.com/

I still don't have my studio assembled, so I can't even hear the demo. Rick seems pretty well versed with BIAB so it might be worth checking out.