shameless selfplug[0] but I've documented my notetaking process here. I don't follow it religiously but it's pretty much it, recently have been making more use of local llms to summarize things/reformat into forms that are useful but tedious to create manually etc. (which is not mentioned there in the linked page)
i am planning to add semantic search over my wiki and other places. Another major notetaking tool for me is pictures and screenshots, I've to figure out a way to make a better way to organize/search them in a more meaningful way