How should I follow up on ask her out?

I like this girl that works to the GameStop I always go to. I wouldn't say that I'm a regular customer, but I do go there enough where she notices my voice on the phone. When I go to gamestop, she always mention something about how I could never prank call her because she knows my voice to well. I always get this vibe that she's flirting with me, but idk if she's lesbian or not. The other day, I finally got the courage to semi ask her out ( I told her she's a cool person, and we should hang out sometime). And she said sure I know right. As I was leaving she smiled, waved at me, and told me see you soon. Does she seem interested in me? How should I follow up on this? What should I say to her when I see her again. Should I ask for her number? And where should we hang out? Is it too soon to go to her house? I really like her, and I don't want to mess this up. So any ideas or tips are welcomed.

Chat with her online a bit to get to know her.......ask her about her....girls like guys who are a bit shy and don't brag......be honest......if you think she looks pretty, tell her and reach for hand.