Do your research. What are her interests on Facebook?
I have always found that I will know if I am going to sleep with a girl within 15 minutes of meeting. Well, sometimes before we actually meet in person. The conversation is going to be really easy like we have known each other for years or the date will be over within the hour.
Ask about all those fools running for President. But don't give your opinion unless you agree with her. Keep that in mind for when you get married someday.
Never ask her what she likes to do for fun. Just skip to suggesting something fun to do!
Don't ask questions like an interrogation, because then it will feel like an interrogation. The only questions that should be asked are her opinion on things, and only as a leading question to start a thread on a more interesting conversation.