Fairly high probability he just wants to play with you. Also fairly high probability he wants to play with you using his teeth. The barking is more likely than not done because he gets a rise out of you and this entertains him. You can ignore the barking, but if he nips to take it to the next level to try to get a rise out of you crate him for a short time till he calms down. Ignore him when he is in the crate until he calms down then let him out. Then play with him on your terms, because that is probably all he wants. You just have to make sure he learns that barking and biting is not the best way to have fun with you by making sure his end result of this behavior is boredom.
Swatting at the puppy or yelling at the puppy might work for very soft dogs (even then shouldn't be done for the sake of their confidence and your relationship) but for a dog like you have he will just think it is a fun game.
Last edited by Baillif; 09-11-2013 at 01:56 PM.