Get comfortable with not understanding things; it means you’ll get to understanding them faster.
If only all realms of learning were like math.
Math builds sequentially from one concept to the next. If you understood the last bit, then this bit is the next logical idea.
Music literacy is not like that. Language is not like that. Science is often not like that. In these cases and many others, concepts are more like a web that interconnect; it’s not until you understand a preponderance of them that you can really understand any of them. This makes teaching difficult, because on matter where you start, there are concepts that aren’t going to make sense at the start.
I like to take the approach that I used to take when showing my dad how to work in MS-DOS. We’d sit down, and I’d say, “Ignore this. I’m going to get to the right place to teach you this concept.” It might take a few other commands to get there; but if I paused to explain what I was doing, it might derail the lesson I wanted to teach.
We all have different levels of not-understanding that we’re comfortable with. But I find that the most successful learners are the ones who are willing to exist in not understanding A and B for a little while as they learn C. If you disengage because you want to learn A first, the learning slows down.