Buy some software.I like Logic personally, if you're on a mac its a great program. You essentially get a studio in the box, its really nice for recording and editing audio. Lots of good high quality effects and it has loads of amp and pedal software.
Chances are you won't get into a serious classical music school, but there are lots of technical institutes and other schools that have programs that will teach you the art of recording.
However, you can pretty much everything online too, if you know where to look.
kvraudio.com
soundonsound.com
are two really great websites that you can learn just about everything from.
Also buy a good audio interface, and some good headphones.
Also, a word of caution - you can't simply plug your guitar into your preamp, record it, and get the results you want. Be prepared to work your ass off learning recording, I had a similar background as you when I started messing around with producing, and trust me when I say its not easy. Its easy to give up, but just keep pushing on, learning, and writing music.
And above all, focus on songwriting. A well written, poorly produced piece of music is still better than a well produced, poorly written piece of music. Always.
If you need help with software you could also hit up the DAWs cult too. I try to help wherever and whenever I can in there.
https://www.newschoolers.com/cultnews/5339/DAWs