It does take a good bit of practice to get good, but if you pick up some beginner method books, you can get started on your own. Most piano methods are pretty equal, but you want to get the full set. So, there's Lesson, Theory, Technic, and Recital - all four have ongoing lessons that fit together as they progress. So you'll learn a basic thing in the Lesson book, have an exercise or two in Theory that teaches you the building blocks behind it, the Technic book works on drilling the skills, and the Recital book pulls them all together into a more complicated piece of music.
(I've taught piano before.)