#17
Only analyse losses. You learn much more from a loss than from a win. It is also to counteract the human tendency to lavishly analyse wins and briefly shove aside losses with some excuse: a blunder, time trouble, bad opening...
#19
Average Joe = 2000 after 200 h - Lasker
Maybe in Laskers time, 2000 rated players were much weaker as there were no computers. So 200 hours with a GM would lead to a very good player
The way to get from 1800 to master is to go up 400 points. I hope that helps.
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You are brilliant, thank you