Don't sweat it. All that information is cool and some of it may actually help your game but most of your (at least mine) improvement comes from putting in the work. Luckily for us, most guys are not willing to put in the work. If you don't believe me stop playing for 10 years or so and then go back into your local pool room. 99% of the guys in there will still be playing the same speed.
This is funny to me. I agree with you 100%.
When I first took to the road, nobody was more eager than I to learn and to get it right. I honestly think I learned more from others mistakes than anything else.
When i took my first trip, a very close friend warned, just watch! You will see players who could be so much better, but they go to the same place eiach day and play the same game, the same players, for the same amounts, and usually about the same results, year after year.
Some change some things and make a bit of a jump but mostly what I was told is so true.
A poster here who I have known for many years and respect told me about his grip change. he went into a good deal of detail and I listened. I tried it for a little, but as in most things and even though well warned, didn't get that instant gratification and went back to what has never worked the way I wished. It did though help me with a problem I had developed with my wrist.
My point is that there isn't much instant gratification in pool. It comes from repetition and heard work. i feel the trouble most have is that when they feel they have it, they are actually just beginning to grasp it and stop perfecting it. To know it is one thing, but to feel it is totally different. I am not so sure anyone ca teach us to feel anything, but that comes from the hours and hours of tireless practice. Some simply grasp it more quickly than others do.
At 60 though, i finally do not believe the best is ahead of me. LOL I can live with that, the question is, how much longer?