I was totally at your stage a few weeks ago when we brought Rodney home. I was so afraid of him making any mistakes because I thought that I would ruin him or something.
Relax! He's only 9 weeks! Puppies are going to mess up, and they need time to learn everything.
Rodney is quite the biter, and the only thing that's worked if he refuses to chew his toys and will only chew our hands/clothing is leaving him alone for about 30 seconds. If you push your puppy off of you and make sounds at him (like saying "no"), he will probably just think you're playing. I know it's frustrating, but Rodney absolutely loves to be pushed around, and us pushing him off makes his SO CRAZY.
We just calmly get up and leave his x-pen, sometimes pointing at his face and saying, "No" very firmly. At first we went out of sight and only came back when he wasn't whining anymore (usually about 45 seconds). It took a lot of time because we had to do this multiple times in a row at first because he didn't understand why we were leaving. Once he caught on, though, he started understanding what we wanted from him during play: all four feet on the floor, and teeth on toys!
Now when he gets too nuts (barking, jumping, biting), I just step out of his pen, turn my back to him, and count to 10 in my head. If he's calm when I get to 10, I go back in the pen and play as long as he's got all 4 feet on the ground and is not biting me. If I have to do this 3 times in a row, I go through the checklist: Has he been fed/watered? Has he been to the bathroom in the last hour? Has he had enough outside time in the yard? Has he had a nap recently?
Usually one of those things is wrong; lately hes been very thirsty and that makes him act nutso. If I've catered to all his needs sufficiently, it's time for a timeout in the crate. I lure him in there with a treat, cover the crate with a blanket, and wait for him to go to sleep. He gets cranky when he's tired.
EDIT: I might add that Rodney, given his choice, would only chew on our hands. I don't know why he loves them so much (maybe the oils on our skin taste good? Texture?), but he does. Try to get him comparable toys. We got an antler from Amazon, and he loves it. It has marrow in it, so it's got a taste to it that he really likes. We also got some softer rubbery toys that he can really sink his teeth into.