Redirect him to chew toys when they're chewing something they shouldn't be. Also when he tries to bite hands you can remove him from the social situation, basically put him into time out for 5 minutes (dont go any longer, they dont have the attention span for it). Set a timer and make sure he can't even see you, personally I used a specific bathroom in the house for timeouts. Never use the crate for punishment, this will create an aversion to the crate due to its association with punishment. It wont end over night and takes consistency, doing it everytime and sticking to the timer.