You are a new seller. There are certain restrictions on new sellers. You need to get some experience and then request permission to sell in some of the other categories you desire. If you are a seller in good standing, it shouldn't be a problem.
So learn how to list and the basics of selling, then list some stuff and get started. After you have a dozen or so completed transactions, you might be able to get Ebay to relax some of the restrictions on you or it could take a bit longer.
Good Luck and welcome to Ebay.
mam98031 • Volunteer Community Member • Buyer/Seller since 1999