What license\forms of identification do I need to have for my online store?

I have just started an online clothing store and I am trying to figure out what licenses\registrations do I need to go through to be completely legal. I know I do not have to form a LLC or incorporate right now in the small stages but I would like to find out everything else I need to do. Thank you!|||possibly a local business license - a state sales tax license - you won't be able to buy clothing at wholesale prices without those things