I had one. I have started lots of books on training........Cesar........The Monks of new Skete and several others but with 4 dogs......4 kids and 2 grandbabies I can never finish. The only training videos I have watched several times are the Leerburg series. They actually helped me with alot of my confidence in dealing with the dogs.
The one I like has been around for some time. I just like it as it teaches you to think like momma dog would in your training. Sometimes we forget they are still animals. I've used her methods with numerous breeds and different personalities - never had a problem with it working. (Knock on wood)
BTW, Magnum is COMPLETELY back to being the good boy I know he can be!!!! Not a problem all week. :-)