Am I that "clueless" or just inexperienced girl

Katherine
This guy I'm dating keeps on telling me how clueless I am over sexual things. But to be completely honest what am I supposed to know besides being fingered, eaten out and pleasing him? I am a virgin and I thought that's all I lacked. Now I'm starting to wonder what is "more" that I don't know. 
​I'm about to be a freshman in college (18) and he's 24. So obviously it makes sense that he's done it all. But he makes me feel so stupid when we talk about things like that. 
​I just want to know what more he's talking about without feeling stupid about it. What more can you do? How can I bring it up without me feeling so self conscious? How am I ever supposed to learn.