i have found out that love over seeds any type of training espically when it deals w/ the family. by not letting him around people when they come around not trying to make a mean dog but your basically putting this in his head that you are the pack leader and when you are not around they are the pack leader. also let him out too after you have put him up for a while and train him like that as well. i have a 14 month old pit bull and pitbulls are human friendly but he has been trained to be a walking pistol. w/ me and w/out me and most definatly w/ my wife. he also is a calm down to earth dog also. he is a i'm gonna steal a kiss on your face kinda pitbull, but only when we allow it. this is just how i have trained our dogs and didn't spend all that money for training that might work and might not. hopefully we can chat more on here but gotta get back to work! :D