Dog Training - If your dog is aggressive, where do you start?

My main dog training channel: http://www.youtube.com/ZakGeorge Facebook" http://www.Facebook.com/TheZakGeorge Is your dog aggressive? Have you dealt with aggression in your dog before? I'm often asked how to work with an aggressive dog. I have always been cautious with giving advice like this, because even the slightest variable change might dictate a different approach. That said, in today's "secret channel" video, I will attempt to help out a viewer by offering some advice. What are your thoughts?