I have gone through the biting too, but normally I can curb it with lots of toys to chew on. One little tooth actually fell out during tug of war with a sock!
My main issue right now is that Aly paws me constantly. It is the cutest thing, but it hurts because of her nails!
This is my first puppy and I have had some frustration with the experience too. When she calms down she is the sweetest thing though and so loving. I keep plodding along and working with her and hopefully one day it will all calm down a bit.