Nice post ... my personal contention is that the two chief strengths one must develop to excel at chess are skills (e.g., developing a plan, identifying candidate moves, calculating efficiently, executing a technical endgame motif, etc.) and memory (e.g., building and retrieving the mental library of tactical and positional images, building and retrieving key opening lines, etc.).
Both these require (for efficient acquisition) structured practice and repetition. Very few of us can simply read something, then flawlessly execute it the first time, unless the task is trivial. But by the various learning techniques you describe, blended together in a structured efficient program that adapts via assessment of our learning, we can surely improve. Sometimes, very quickly.
I was reading an old Electronics Engineering textbook the other day and came across some very interesting ideas in the preface (the part of a textbook rarely read by anybody) regarding the way people learn.
The author very bluntly stated that everyone does one of FOUR things in order to learn something new :
Some do one or two things far better than the others. Others might be exceptional at one and pathetic with the rest.
This may explain why I personally could never stay awake during my engineering college lectures or could never wade through theoretical papers but ramped up extremely quick when I got to go over examples. I pretty much survived through graduate school on nothing but homework problems and going over exercises and working them out (By Doing, By writing).
My dad (an incredibly successful engineer) on the other hand is remarkable at the "listening" skill. He can absorb things very quickly and used to tell me that he never used to take notes in class because he saw no point. Though he can't get his feet wet with a hands-on exercise until he's absorbed ALL of the theory behind it...which is exactly the opposite of what I need to do to learn something.
So how does Chess come into all of this? Well it fits perfectly!
Reading : Going over games, reading books on strategy / opening theory
Listening : Getting coached / yelled at by good players at the local club etc.
Doing : Practice! Practice! Getting burned OTB/Online and figuring out why.
Writing : Annotating one's games, doing beast-free analysis.
Everything I ever learned was through example, through mistake....through "doing" and figuring it out through painful practice. My brain could never take any chess advice at face value just because some GM or famous author blessed it. Even when I pretended to "memorize" a good guideline, I would never apply it until I got burned enough in a slow tourney game.
Also explains why it took me a few years to understand why color complexes (light/dark square weaknesses) really are a big deal. :)
Apologies for the long post ... I was curious => what manner of learning worked for you? How did you as an improving chess player sponge in all that is good about your chess?