I own and play a Hammond B3 organ with a Leslie 122. I also own one other Hammond / Leslie combo, and 24 other keyboard instruments. I have been playing by ear since I was a child, but above the age of 40, I taught myself how to read music, and within a couple years, I was reading music at an advanced level.
I also taught myself how to knit.
I have been doing computer generated graphics (Blender , Sketchup, etc, for several years now, and like every new skill that is acquired through hard work and determination, I am constantly learning and adding to my knowledge base.