You are never too old to start learning. I started composing this past December, I was 22, I just turned 23. I had musical background in piano and several other instruments. I applied what I knew into writing music. I study from articles on the internet, also the composers here who have years of experience have been helping me. I would probably not be a good person to ask for theory advice because I am a beginner, but there are several here who could probably teach it for a living; namely, J. Lee, johannhowitzer, Nico (N.S. Canzano, who is actually on vacation right now in Italy), Evan Duffy (pianobeast), and Marius. There are a lot of others, those are just the ones that helped me personally. Also, chopin, the administrator, but he is never on anymore. Good luck
