Seriously look for something like this in your area.
Local Universities might have something like it. DS was so difficult and challenging. I dreaded Tuesdays and Thursdays when he didn't have school. Since the 7 week course, he is a different child. He actually told me I was the best mommy in the world
They teach you things you probably already know, but better tools to deal with the defiance. I have new tools and feel like a new, better mom because of this class.