Lesbian sex!

Hi lol. So I’ve known I was bi since forever, but due to growing up in a small town, I’ve only ever been with guys. I want to explore my sexuality with girls but I’m nervous because of course, it would be a first time thing. I don’t want the other person to feel like they are my “experiment”, so how do I communicate to her that I’ve never done this before without making her feel uncomfortable? Any incite would be appreciated :-)