I am sure there will be some people who will outcast me for this but who cares. You want advice, I followed the training of Ceasar Milan. I have also dealt with a woman here in New York who has been called the Female Dog Whisperer. His teachings on being the pack leader is incredible. Go to his website and order his CD's. It's helped me so much. I went from knowing nothing to educating myself and becoming a much better dog owner. Make sure everyone in your home is committed to the same training too.
Also, WALK WALK WALK WALK WALK your dog. You will be amazed at how much the two of you will bond. I walk Sue an hour before work and an hour after and I was baffled at how much it really works. I have a different, more respectable and more socialized dog.
I'm not an expert and I don't pretend to be. I don't know a lot but I do know what works for my bullies.
There are three kinds of people: the ones who make things happen, the ones who watch what's happening and the ones who wonder what happened.