Thank you Star. I'm posting this in part to encourage everyone, particularly the slow learners like myself, to continue to push ahead, and not to worry too, too much about the speed of your improvement, nor be discouraged if it comes slowly. The major cause of my modest improvement, I believe, is that I have not put in enough hours, day in and day out, to make faster gains. I'd say my "talent" level is average, like most of the people here, so I get out what I put in, in terms of effort. Simple enough.
If all one sees here is the examples of tremendously fast improvement, some might wonder why they don't show such sudden gains, and be discouraged. It's encouraging to see slow gains as well, I think.