What to do till a date?

Yo so I met this girl today because of a few friends and we added each other on Snapchat and we planned a date in 2 weeks. Now I'm new to dating because I'm only 15 and have had almost 0 experience with it. So what do I do till the date like I gotta text her but idk what because I don't want to ask her a lot of questions on snap because I wanna save that till we meet in person so we have shit to talk about and it's not awkwardly quiet. But just what do I do till the date that's all THANKS!!!