How do I make good conversation with girls, and what about?

well I'm a girl, and I like to talk about ANYTHING!! hah.. in study hall last week me and this hottt guy were talking about his bigg !! ( lol , really funny, not preverated or anything) and then we started talking about stiches and then teeth. just random stuff..lol. ask her what she likes to do and what she does on the weekends and stuff. look her in the eyes and be interested! : ) hope this helpss