Thank God, my supervisor is nice lady

thank you very much for your answer, unfortunately I use macbook and cannot use Microsoft one note.
please if anybody knows similar programme.

Dear all, I am happy to be with you in this forum, this is my first participation,
I am a PhD student in international law in Geneva University, I started last March.
My problem is how to taking notes or how to save them to be able to use them later. I read an article, and find a lot of information relating to various chapters of my thesis, so I cannot read about each chapter separately.
My Prof advised me to use excel for writing the notes and then when I want to writ about a specific point, make search for it in all articles. It is good way but it takes long time and boring. So can you advise me what is the best way to save notes

Thank you in advance