I'd pitch in to what Carmen asked, and suggest you do just go ahead and tell him about your worries.
For one, sometimes just saying these things out loud to the person we're worried about them with can go a long way. You too could also talk about how HE learned to do what YOU enjoy. Because it's going to be the same way you will, mostly likely: by trying some things and by communicating. (And if you two haven't been doing that, then chances are however nice what you two have done has felt so far, it could feel a whole lot nicer if you communicate more so you both can learn together what works best for each of you!) And you likely gave him room to have a learning curve as well, so you two could talk about how of course, you'll be given the same room to learn as you go.
I'd also remind you that sex with a partner -- when it's sex people tend to actually really enjoy -- isn't about people doing things "right." Rather, it's about enjoying the whole adventure of the thing, experimenting, and learning as you go. So long as people are communicating with each other, are listening and responding to that communication, and are doing a good job staying within any limits or boundaries each person have, it truly is awfully hard to "do" sex "wrong." If, when you take part in any kind of sex you both want to be part of, you're just focused on what feels good to you, physically and emotionally, and what he tells you is and isn't working for him, and your main focus is just on that and connecting together, not on rights or wrongs, it'll all be good, truly.
BUT.
I'd also say that it's important to talk about feeling like you have to do anything sexual. No one is obligated to do anything sexual with anyone, ever. If he's doing things with you, that's ideally because HE wants to, as much for himself as for you, and because he's enjoying himself as much as you are. If he's not, or he's doing anything he doesn't actually want or like, then it's time to check in about that and change things up so that the only things either of you are doing are things you want to do -- as much for yourself as for the other person -- feel okay doing, and both enjoy. And if you're not yet in the place where you don't feel obligated to do something sexual, I'd suggest stepping things back a bunch to figure out what has to happen to change that, whether that's about ways you're thinking, ways he's behaving, false ideas one or both of you has about sex, or anything else.
Equality in sexual relationships can't be created by anyone doing sexual things they don't actually want to be doing. Again, if he's doing something to your genitals, that's probably because he likes doing that, as much for himself as for you: with something like manual sex, for instance, when it's wanted by everyone involved, it tends to feel just as good for those of us "giving" (IMO, this is a problematic framework to begin with, but it's what people tend to be most familiar with) as for those "receiving." Our fingers have a ton of sensory nerve endings just like genitals do, so it can feel as good to the person with the fingers as to the person with the genitals involved. And the things that make someone doing that to you enjoyable are usually the same or similar things that make it enjoyable for the person doing the doing, as it were.
But if he ISN'T enjoying himself and DOESN'T want to be doing that with you, the answer isn't for you to ALSO do things you don't really want or only feel you have to do. The answer in that situation would be for NEITHER of you to do anything you aren't psyched to do and don't love doing.
If you haven't read this already, this piece might also help correct any ideas you have about reciprocity that aren't sound, since it sounds like there are some busted frameworks afoot here:
Reciprocity, Reloaded.
But above all else, it sounds to me like for right now, what you probably need and want to do more of is talking about this. If you don't feel ready to do anything -- or aren't even how sure you really want to, rather than feel obligated to -- or feel scared more than excited, it's not a good idea to push yourself to do that thing. It's usually best for everyone to honor your own feelings and to work things out like this by talking them out first.