A puppy obedience class is a MUST for all pups, especially very large dogs! There are humane classes available! It teaches basic commands as well as some potty training suggestions & good manner skills (no biting). It also socializes them.
The suggestions you recieved are great. Also when he bites you well ouch or do a hurt puppy whine really loud and then offer him a toy that he is allowed to chew on! When he chews on the correct objects, PRAISE, PRAISE, PRAISE! Do not allow him to chew on rawhides until he has learned what he is & is not allowed to chew on as they only encourage the dog to chew! Also do not give him toys that resemble other articles around the house. For example old socks, how does he know the difference between old & new socks? Also if you have the cheaper rugs with remnants of rags tied together that look likt the rope toys they have for dogs.
As far as potty training goes it sounds like you off to a great start 8 weeks and he only pees in the house & that is only once in a while! But to help on potty training teach him a potty command. When you bring him out tell him to "go potty" (or whatever else you want to say). As soon as he finishes then praise him but don't praise him too much as he may be too excited about the praise & may not finish his duty. This command comes in very handy especially when traveling or when a sample is needed for the vet!
Gotta love the sb's! Beautiful dogs!