In December of 2016, I discovered Bear Writer. At the time, I had been using a number of different solutions for note-taking and organisation, none of which had really done the trick for me. That all changed with Bear. Arriving to critical acclaim, Bear is certainly a very pretty app, and its iCloud sync feature has served me well enough. There has just been one issue; it is only available on Apple devices.
One of the tools I use in my studies, is OneNote. I find it does a good job of being a place to sort my study notes, and offers the benefit of search, which lets me easily find what I’m looking for. While there are certainly other tools out there that could offer much the same benefit (EverNote comes to mind), I’ve already got OneNote installed as part of the Office suite, so it made sense to use it.