I've looked through some of your stuff and you're pretty good! If you got that far on your own, you could start off by experimenting with paints by yourself. A teacher would be a faster way to learn, but teachers can also sometimes be restrictive (and expensive.) Unless you find a really good one. I think I went through more than 3 teachers before I found one I wanted to stick with. She's a genius with art!
I did. I got pretty into it. It was funny because I'd stop one day and go, "AHHHHH I'M TIRED OF THIS I'M DONE." and then pick it up another day and go, "Oh wait... I need to fix this... and this... and that........"