26 years old and going on my first real first date

I've always dated guys that I have known for a while or had hooked up with right away so I've never really been on a real first date before! A guy from work and I have been talking and he asked to go to a movie together tomorrow. I have no idea how these things work! Should I offer to pay? I hate letting people spend money on me but he seems like a traditional kind of guy. Also we've never held hands or anything so I don't know what to expect! And I know for sure this is a date because he asked my roommate what movie he thinks I'd like and we established liking each other. Any tips for someone whos never been this nervous to see a movie with a dude before? Thanks! 😅