Music theory is ... is like git. The underlying framework is pretty nice and based on only a small set of basic principles. But the user interface is badly designed and none the tutorials explain it well.
Once you understand the basic principles, you're good. But no one has figured out how to explain things to a new person.
But since you can't get much use out of music theory without going through some user interface (a particular instrument or notation), you also need to learn how it's laid out (how one maps onto the other, really). But maybe something like this keyboard could be an interesting teaching tool?
Once you understand the basic principles, you're good. But no one has figured out how to explain things to a new person.