Congrats on your new kitten!!! You've already been given some great advice. I've heard of some cats hiding under the bed for 3 weeks because they were so scared. Hopefully this won't be the case with him. I'm sure he'll be able to find the litter box and will use it but if you're worried about this then you may want to put it closer to the bed.

So will your son be sleeping in this room? If so then the kitten may be too scared to come out until he gets used to your son. Good luck and I look forward to seeing some pictures of him.