While you're buying supplies, pick up some lube. I don't care what anyone tells you, you need it. Oh, and take your time. Which means foreplay, oral sex (both of you giving and receiving), and learning what you do and don't like. If your partner is doing something that is really great, let them know. If something isn't working, same thing- let your partner know. If there's something that you really like that they're not doing, offer a suggestion. All of this is communication and it's a huge component to enjoying sex.