considering drinking for the first time!! need tips! (only genuine pls)

hey guys, so I am considering drinking for the first time. I am a 19f and haven’t drank to the point of feeling buzzed or anything before. I am pretty nervous about the unknown about what feeling tipsy will be like. i’m going to a party this weekend and thought it might be cool to get tipsy. I definitely don’t want to get drunk yet. I also have a fear of puking which might sound weird lol but it’s true, so I just want to know if there are any drinks full of sugar that I should avoid because of that. I was recommended surfside by two different people, but I was wondering if they were a full of sugar. any advice helps thank you so much!