First of all welcome. If you haven't already, I suggest you read the caresheet to make sure you're taking the best care of your snake possible. There's a link in my signature.

As for handling, it's generally recommended that you don't handle them until they're eating for you. I'd wait to pick him up until two days after he eats. Give him time to digest so that he doesn't get an upset stomach.

When you do start handling, ignore his protests and handle him! He's got to learn that hissing and biting won't make you go away. Eventually he'll stop trying.