Offtopic, but I use org mode for my notes files (both general and technical), and I've never really figured out how to use it effectively.
My pre-org notes file was just a giant text file with entries delimited by manually-entered '--------------' lines. I stuck a topic in each entry for searchability and then the rest was freeform text. It worked pretty well.
org mode gives me more power, but it's getting a little unmanageable. I find myself expanding and collapsing sections a lot, especially when just trying to find the right place to add a new entry. (I'm using a hierarchy rather than the flat append-only list.) The file is pretty huge at this point, and I split it up once but that broke my most common usage of just isearching through the entire file, and it was annoying to have to load multiple files to do a complete search. I had links between files, but that didn't help for searching.
I imagine there are tips and tricks to resolve all of my issues and nuisances, but I've never taken the time to figure them out. Is there a good workflow description somewhere that I should be looking at? It's hard to beat a basic text file, but after a decade or so it has gotten pretty big and I'd like to eg be able to cluster related things together so I can purge obsolete stuff.
Maybe my problem is that org mode is intended for organizing things, and my use case is too free-form?