I first just jot them down on the Mac's Notes app. This bit isn't that important. You just write whatever you are taking notes of, no particular structure. The

I first just jot them down on the Mac's Notes app. This bit isn't that important. You just write whatever you are taking notes of, no particular structure. The next bit is important though. Within __30 minutes__ since the end of the lecture, I go over the notes and organize them. Note the 30 minute limit! If you try to organize the notes the next day, you won't be able to remember the lecture and not be able to fill in the missing details.