dark donkey, an RPG is extraordinarily complex. With your understanding of this programming language, it's going to be impossible to make an RPG.
But with a little work, you can make one. First of all, you should take some type of programming class. The language isn't all that important. What is important is that you learn the underlying principles of programming and good coding techniques.
After that, or at the same time, you should make a few smaller games. Pong, first of all. Then maybe a scrolling shooter. Then maybe an action-adventure game. Each one will teach you things, and provide you with code that you can reuse in your RPG.
And, very importantly I believe, make a small RPG when you feel you're ready. If you can make a small one you can easily scale it up. If you start too big then you'll likely never finish, like most RPGs started here.
Good luck with it.
Come see the WIP!