Most Helpful Guy
You can talk to guys without dating them. I talk to girls every day but I haven't ever dated one lol.
Just say whatever comes to your mind and talk to whatever guys you want. They'll most likely respond, and eventually you'll get used to it and they'll get used to it. Like, really quickly.
Just start with some greeting, or ask a question about the class, etc. It doesn't really matter. Almost every friend/acquaintance I have now, I just got to know them by doing exactly what I described above.