1) no notes 2) n/a 3) yes, sort of. Learning something an hour per day over 10 days > learning something for 10 straight hours in one day 4) no method, but

1) no notes 2) n/a 3) yes, sort of. Learning something an hour per day over 10 days > learning something for 10 straight hours in one day 4) no method, but I tend to naturally go just below the surface on many different topics, so I think that helps. A key thing for me is that I learn best by doing. So maybe watching 5-10 hours of a structured "course", usually at 1.5x speed is about my limit before I have to get started on my own project applying what I'm learning. After that, it's mostly blog posts, GitHub, and Stack Overflow to learn the more advanced aspects.