First time hooking up.. help lol

I'm a bit embarrassed to be posting this but a girl is at a loss!! I'm 18 and has been seeing a guy for two years. we are now broken up and I'm starting to see other people! exciting! But I've never been with anyone other than him and I'm very nervous. I met a guy recently and were supposed to hangout tomorrow, there's been a lot of sexual tension through text and I'm definitely interested in him but I'm so worried!! I've never hooked up with anyone and I just don't even know what to expect or what to do. what if he's not attracted to me irl or he doesn't like what he sees? should I i initiate anything or wait for him? what the hell do I do hahaha. Any tips or things to ease my worry??