You've gotten some good advice here already. I think the 3 words to
remember with training are, "exercise,discipline, affection ". Try to see that
he gets lots of excercise to wear him out & training on obedience (commands)
every day, before he earns affection.

I don't know what you think of Cesar Milan's ideas about dogs, I think he's
got it right with the order for successful interaction with our dogs.