What should I do what the girl i like?

There is this girl her name is amanda or she call herself mandy will she is the hott's thing i ever seen and i would like to go out with her i ask once and she said not right now and then weeks went by and i ask my brother to ask and my brother said that she said maybe what does that mean? well i am going to hangout with her and what should i do? what should i talk about? help me please!!!!!!!