[ThalesX]

1, 2) I always take notes, but then I discard them. It's just for mental correlation;

3) Never tried it, curious but not that curious;

4) Take long walks and think about nothing.

I don't really fell that I have the space to incorporate notes in my type of learning as I love reading about all sort of random stuff and getting to the peak of Mt. Stupid [0] and kinda leaving it there unless it's of real interest to me.