Goin to the movies with my girlfriend, check question please?

hey so me and my girlfriend just started goin out like 3 days ago and it's goin great and we're goin to a movie in 2 days together for a first date. this is my first girlfriend and i feel comfortable with her, it's just i want some tips on things i could say that would be right but not to awkward, or things i could do, or just any tips... thanks for helpin me out :D