Hey, when I was your age I didn't know how to drive, or cook (well, a few things, like, the kind of things you make as a kid because you're sooo hungry) or know a lot of that stuff. Don't worry, you'll pick some of it up, and realize some of it isn't all that important, and other things you eh, maybe can't get but it might not be as huge a deal as you think...
and then as you get older you'll start to panic about different things like omg I don't know how to do my taxes, and car loans? I don't understand half the terms on this paper? What's this letter saying, do I owe them money, do they owe me money? What's up with this? And why can't I put that in the washer with this garment? Where are the frigging instructions to any of this? Why didn't they teach me any of this in school, it would have been much more useful than knowing the names of 17th century farming implements!?!
I'd like to say it all gets easier as you get older, but really you just get different life markers and questions to panic over not knowing. And after a while you start to look around and realize a lot of other people aren't getting it either, they're just doing a better job of pretending to.