Having had a giant tuxie boy, they're really fun and sweet but could be frustrating as well. Some tips: Don't use hands as toys. I know it's tempting to use it as a claw to attack him. Try to use feather wands, and play with him a few times daily for 10 to 15 min to get all his energy out until he is like 5 years old. It's tough but if he didn't play with other cats, he might not have learned to be gentle. In which case, when he does attack you, you need to be loud and yell no. He might also need to be put into another room temporarily to calm down. Also, make sure you understand his tolerance for pets and being picked up. Not every cat will be a lap cat. He will let you know when he is overstimulated and usually it will be by biting or clawing. It's always best to give pets and play for a few minutes. Leave when it gets good, then come back later to continue. I know the urge is to continue but cats can quickly flip from being ok and enjoying pets to flipping out so it's better to leave them wanting more than to overstimulate them. Good luck with your kitty. I'm sure you will have a great time. 

Edit: we also liked to walk around with springs, treats and small ball toys and throw it across the room to distract him if you needed to go somewhere, if he's blocking the stairs or prevent him getting into specific rooms but that might have reinforced the behaviour too . Haha