19m, only ever socially drank. What’s a good starter for my 21st?

Pretty much as the title says. I’ve only ever tried beers, wine coolers, a long island, and some really shitty IPA (idk if its even different than beer tbh).

What are some suggestions for my first legal drink? I don’t want to get shitfaced, I’d like for it to be something classy that I can sip on. Any suggestions? I literally know nothing lol