If you haven't already had a play with Google's NotebookLM - https://notebooklm.google/ - you really should have a look. For example, even from a very simple business data point of view, you could upload your own notes, market and competitor research and ask NotebookLM to identify trends. Lovely jubbly.
Thanks for putting this out, I have not seriously tried this but will definitely try out. Any advice you would give for using this in understanding concepts for studying or such.