Kim, there is a far simpler solution.........bitter apple. Spray your hands with that (and use a fork for ANYTHING you eat for a while) and let him bite you. Will quickly learn that it is a nasty thing to do. You can do the same thing with anything strong tasting that a dog doesn't like. With that mix, you will have a pretty smart, mellow dog. I wouldn't try this with a terrier type, but a lab type, yes. Not big on puppy shaking.......can make them really head shy. Conversly, teach puppy that rough playing is only appropriate with heavy garden gloves. We've done that one too, to the point where dog would bring the gloves to us. But bear in mind, this is a baby, and don't sweat a huge amount of training at this point. You'll have a lot more fun if you just enjoy each stage.