crush advice?

So there's a guy in my school that I started messaging about two weeks ago, I did so because I already had a bit of a crush on him as he often makes a point to talk to me at school and actually shows interest in our conversations. We talk almost every day for several hours at a time and I'm beginning to think that our feelings are mutual. I'm just not sure how to move things along to something more than just a flirtationship. Advice?