[JoeyP]

If he is biting you ..... That ain't Good

You're right you have an aggression problem ... with a possessive problem
But if you're depending on advice online to remedy the problem its probably not going to get better
You're gonna need someone to come in an assess the problem and the dog

But in the mean time
Aggression and biting needs swift correction
If he growls barks or nips if you show affection or pick up another dog
It's an Immediate Loud NO!!!
and you take yourself away from him immediately
No further words or attention because that will only be rewarding the behavior