My music school provides free theory classes if you take any weekly class to learn how to play an instrument. The professors teaching you an instrument know wha

My music school provides free theory classes if you take any weekly class to learn how to play an instrument. The professors teaching you an instrument know what theory you are learning - so they will then include that in the music you are learning to play so you can see the theory in practice. If you want to learn quickly, a good music school is going to be hard to beat. I'm basing this on having tried teaching myself online and having had many private teachers. Both of which work, but just a lot slower and with more limitations.