22 years old here, so not entirely adult-brained yet. I am in the process (well, while recovering from a surgery I'm taking a break, but...) of learning to play piano myself. It's slow going but pretty fun. If you have prior musical experience (for instance, in choir) it will be much easier.

I've mostly been having difficulty finding appropriate (and interesting) sheet music myself. I mostly have been playing video game tunes, and many of those aren't particularly easy for beginners.