what're some good topics to talk about while on a date?
Tell her stories about you, experiences, hobbies. Something that is funny and light is a good way to start. Avoid discussion about religion and politics. Just talk about stuff you like to talk about and vice versa.
a safe bet is to talk about your partner interests, so that s/he feels you're interested in him/her, while providing also some info on you so that s/he has something to relate to you.
So don't stress about it, and just try to get to know about your partner