I've read about the nothing in life is free stuff... I didn't realize it was something to buy though. I just thought it was a basic concept - the dog has to do something for you (like sit, roll over, etc) in order to get whatever he wants (playing with you, food, etc). Your rule the dog's life, not the other way around. Maybe I should read up on it a little more.
One little thing I'm doing with my puppy that I think is a NILIF thing, is that whenever I give him his food dish, I always make him sit first (the only trick he knows reliably so far). I agree with JoeyP though - what I really want is eyes in the back of my head. That would be the most helpful thing!
I dunno... good luck, anyways, no matter what you end up doing.
Lauren & Nikko