Over the years I have tried a fair number of Lightroom tutorials, both free and paid, and have bought books (e.g., Victoria's) and read many articles. All that has been helpful. And, I know I still have much to learn in terms of technique (as a small example, I don't use the Flow and Density sliders very often, even though I know what they do, I'd probably benefit from learning them better).
At this point, what I think I need is something I have not (yet?) found: Resources that would help me to train my eyes, so when I first approach an image, I can assess well what needs to be done (or at least what
could be done, and with what effect on the image). I recognize this is art, not science, but one CAN learn to "see" better. My personal example of this is how I learned to "hear better." In college I took a music appreciation course from the Dean of a conservatory of music. The course was different than most "________ Appreciation" courses, which often are really "History of __________" courses. We listened to a lot of (classical) music, of course, but more importantly, the prof taught us how to hear more than we could before. We spent a full week listening to the 2nd movement of Beethoven's 7th Symphony, and followed the score, and listened to the prof analyzing, measure by measure, what we were hearing and what Beethoven was doing. By the end of the semester, I could hear things I simply couldn't before! That's what I want to be able to do with my eyes and photographs.
The closest I've found to what I'm looking for is George Jardine's
The Image Correction Class. Jardine explains what he thinks each of his example pictures needs in terms of correction, then explains how LR can do that. But, he doesn't explain WHY a given picture would benefit from what he thinks is the right thing to do. So, it's great as far as it goes, but I'd like to find more.