How do I start and maintain the talking stage as someone who has very little experience?

I (19f) am bisexual and have known this for a long time, however I have only really talked to and had situationships with men. Although I am more comfortable with women and my biggest crushes have always been on women, I just don't know what to do when they like me back or show interest in me. I recently matched with a girl (18f) on hinge and she is a lesbian and exactly my type, we spoke for a little bit but I'm not sure how to revitalize or keep the conversation going. Around this time last year, I met a girl who was also exactly my type and completely blew it bc I just didn't know what to do. I just don't know what to say or what to do. Any advice???