I try to things as simple as possible, and do all my note taking in Google Docs. Sometimes I worry that I depend too much on Google, so I started to take notes

I try to things as simple as possible, and do all my note taking in Google Docs. Sometimes I worry that I depend too much on Google, so I started to take notes in plaintext using Vim and uploading them to my GitHub repo. For everything else (including visualization) I use pen and paper (or a graph composition notebook).