I can nerd out on that kind of stuff with the best (worst?) of them, and I understand this can be off-putting. However, I actually don’t think that’s really what bothers people. Even your average player in a band knows shitloads of music theory and can explain it in pretty complex ways, even if they are not formally educated and only have their own lingo for things. From where I sit, most musicians are actually pretty good with harmony and knowing what scales and chords fit with each other in quite sophisticated ways.
Where everybody seems to fall down is actually finding that stuff on the fretboard. Even really great improvisers we have interviewed do not give clear answers about how they know what notes to play when the chords go flying by. They almost universally say vague things like “Well, I practiced that in every key”. I have no doubt that these players did these sorts of things, but I don’t think that actually explains what’s going through their minds when they improvise.
For a while now, years at this point, I have been asking questions about this sort of stuff in the interviews we do. The best one, and the player with the best answers to these questions, is Martin Miller. This is our best talk on this subject:
https://troygrady.com/interviews/martin-miller-through-the-changes/
This talk is the closest thing to the kind of “do this, then do this” type of clarity that beginners need to understand complicated topics. It’s not there, but it at least leans in the direction, especially if you already know the harmony we’re talking about.
We can do better over time. We have some interviews with great improvisers like Frank Gambale and Oz Noy coming up, so we’ll have a lot more to talk about in this arena.

