[ajarmst]

(OT: Suggestion to not use software...) I'm aware that this is answering only the implied question, but many recent studies have indicated that handwriting is still the best tool for learning. I use a good-quality bound journal in quadruled or dot format. It's organized by date, so all my notes are in one book, but I add indexing notes and topic references. I use a variant on the bullet journal (bulletjournal.com) for integrating my notes with task information. I've been in IT for thirty-five years, and have spent a substantial portion of that in classrooms as a student and as an instructor. I have yet to find a digital replacement remotely as powerful, and I've tried most of them.

NB: I do sometimes photgraph and ocr important pages that need to be archived or machine searched. It turns out that I don't need that nearly as often as I thought I might. It also turns out that, if you were the one to write it, you can actually find the page you're looking for in even a large and full journal extremely quickly because of the way your memory works with physical objects.

[ajarmst]

PS: When I do need to type notes (often when working with others and want to record decisions), I usually use org-mode, which is pretty much de riguer because I spend most of my time in emacs.