Got a number... now what?

Here's the story. I've seen this girl around the gym and started talking to here recently, 3 times to be exact. She seemed somewhat interested in me so I asked her out today, admittedly without putting much thought into it. I didn't want to wait til she lost interest so I pulled the trigger.

She has a busy work schedule and said that she has no social life, so I said she should give me here number and that I usually have something going on on the weekends and that she should tag along. She said sure if she's not working.

I'm not really sure if I have plans this weekend especially since some of my friends are out of town. Any suggestions/advice on what to do with this girl?

Thanks ahead of time!

Take her out for some drinks, nothing expensive. Get to know her better and just have fun. That last is important. Just smile and go for it.