Starting to talk to a certain girl

If there's ever pairwork, then try to use it as an opportunity to be next to her.

If there's no seating plan then ask if you could sit next to her.

If there's a kind of common room or lunch place where you could interact with her then that's cool too.

Remember to give her a reason to talk to you, or 'hook' her. This way you'll be able to add her on Facebook and things'll go from there, but play it cool.

I liked a girl and the first time we spoke was when she was walking to the bus stop and I managed to say hi. I knew she was really good at Chemistry and could've done with some support for a maths module that she was self teaching, so I offered to meet up with her (though not on the very first time that we spoke!) to 'exchange services', though I only ever recall studying Maths with her, but it worked really well and I'm glad it happened. That's one way of 'hooking' her, but I'm sure there's other stuff like finding out about common interests or just working together.