Dog Training Dvds

My dog is very aggressive with people who dosnt know I'm looking at a behaviorist, but I was wondering if there are any DVDs or books or whatever works. I love my dog, but if it bites someone else will be sacrificed. What I discovered was – Why put off the invevitble, Life is too short to put up an aggressive dog. It is a fabulous solution for the care of this, is called a trip to the vet and an injection. No mutual aid for a dog like this. Or spend the money for a real dog trainer or put the dog to sleep.