I learned entirely on my own. I play only a tiny bit of guitar, but can't play any other instruments to save my life.

I started off with (and am still using) a Digital Audio Workstation (DAW) called Rytmik Studio. It is not perfect by any means, but it packs a punch and is not terribly expensive. It might be worth looking into since it has a lot of various instruments built into it.

Anything I didn't know how to do, I would YouTube or join a forum to ask for help. This is my third and a half year making music, and I can never stop now.