advice on a puppy PittBull????

Halley • Happily engaged with a daughter named Kierstyn Breea🌺
How do you train a puppy pittbull?? I smack him on the nose and he thinks it's a game. I use a rolled up newspaper but he isn't too scared of that no more. He's 3,4 months old. He's a boy and extremely hyper and thrives for attention. Maybe getting him fixed will help?? Our baby girl is due 2/7/17. Our pittbull jumped up and bit my husband on his nose and drawn blood to his nose last night.... I'm scared. I wanna keep him but he's sooooo HYPER. Please help!!!!!