Current Events > Need some help with organizing my notes and stuff on my android....need app recs

(+) Yeah! (+)

What I need organized:
-I have many (100+) PDF documents, average size is 7-10 pages, that want quick access to. These are essentially research articles that I read and I want quick reference to when I'm at work. I would like it organized by subject - there will be approximately 12-15 subjects. And in those subjects I want it organized by subtopics. For example: Cardiology is a subject. Heart Failure, ACS, etc would be subtopics.
-~10 e-books also under the same topics
-I have my own notes in word documents and PDFs (hand-written notes that I scan into PDFs on my phone), I also want these with the above PDFs
-Powerpoint presentations - I occasionally do presentations, so it'd be nice to have these organized within the same folders for quick reference

Ideally I wanna be able to edit these PDFs and documents. typically it would just involve underlining, circling, or highlighting different lines

Whatd be the best app to make this happen? In the past on my ipad I liked notability and goodreader. but these days I dunno whats good. That was like 6 years ago.
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bump, right now I essentially have all this stuff divided into hanging folders in a rack, but I want to digitalize it all.
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Maybe put them in Google Drive and use the native app?
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one do you guys think about OneNote
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