How do you start a date?
What Girls Said 1
As far as I understood, you have never spoken to her. You can ask her something about the music you're doing or anything connected to your class, tell her "I am (your name) by the way" and ask her for her name or surprise her by mentioning her name during the conversation. If you find it difficult to find the moment, don't think too much about it, just go ahead when you see her next time. After you have spoken to her a few times, you will know if she likes you and you can go further offering her to spend time together in college, like having drinks or lunch there. You don't need to worry, if you're drawn to her, give it a go.
What Guys Said 2
If there is something going on between you to start with, by talking to her a bit you can ask her out. Try to get her alone so that it wouldn't be awkward for her and ask her if she wants to go do something sometime (up to you to plan the date.) Getting the girl alone and making the perfect opportunity to ask her out was always the hardest part for me.
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