How do you approach someone who makes you so nervous?!

So I started college last week, and literally the most beautiful person ever works at my college bookstore. Being a creep, I found out she is a senior (and single...). Obviously, I'm not gonna go up to her and ask her out, but I do want to be her friend. I just want to know her and hang out with her (friend wise), partly because she's so beautiful, and partly because she's so eloquent and soft spoken and she seems so gentle and nice that I feel like dying whenever I check out at the bookstore (Yes, I have probably wasted more money than I should have just going into the book store to see her). However, I don't know how to even go about doing that. I get all flustered and can't talk to people I find so incredibly attractive.

It makes things awkward because I was crying on the phone outside the hallway from where the bookstore is because of how out of place I feel here. She walked outside and saw me, and now I'm pretty sure she thinks I'm some weirdo first year with emotional problems.