I have a crush on my classmate. Should I talk to her on social media, as my initial step?

[Alma 37:37]

You're already off to a good start if you two talk during soccer practice and parties. You CAN talk on social media, but I really wouldn't call that the "next step", being that it's just a normal conversation but through the computer. Your next step would be asking her to hang out during the weekend, just you two. Perhaps dinner just so you two can talk and get to know each other more without any of your other friends interrupting. Good luck!