Hi and welcome to you and Chester. Mandymic is absolutely right, I think we've all gone through this problem, some maybe worse than others but, certainly in our case, it does get better and they do grow out of it. Main thing is be consistant, as soon as biting starts, stop playing immediately and show dissaproval by completely ignoring him. I used to just say NO sternly, look away and take the toys away. Its also a good idea to keep a toy in your hand and play with that rather than using your hands.
Plenty of rest (they need loads at that age) is important and try to avoid over excitement (ha ha, I hear you saying! 😉), but keeping play sessions short rather than letting them go on until he gets really wound up helps too!
Looking forward to hearing more - you've come to the right place, they're a great bunch on here and threre's always a sympathetic ear if things get tough! And, we Love pictures!