dog training tips


We just got a new 11 week old Rottweiler. I am not a dog person, and I don’t know too much about training. Any tips would help. A specific question I have is: He likes to lick hands, and once and a while rubs his teeth on them. A little love nip I suppose. Should I stop that completely, or should I train him to keep it nice and not bite hard?? Im thinking if he keeps it nice, it will get him used to having hands in his mouth for when we need to pull out the rocks he chews on and brush his teeth. Advice?