Which books/thoughts enter your slip box?
Hi! New guy here. I'm about to start my own zettelkasten, but I'm not entirely sure what kind of notes should go into it. I read a lot of non-fiction, but it has mostly been pop-sci and the like. I'm not sure that's the kind of information I want to use in my zettelkasten.
On the other hand, I'm curious about a lot of things and would like some storage of explanations about philosophy, psychology etc. -- a personal wiki I guess.
What kind of notes do you guys store and from where?