I don't take notes. I find it distracting. I end up absorbing less information. The few times I did try taking notes, I rarely referred back to them, and when I did, found that they weren't very valuable. I've got a good memory, and I'm willing to reread something to absorb more, but notes have never helped me. Not criticizing note-taking; just offering another perspective.
I wonder if part of it might be because I write slowly and tend to focus on my penmanship (unknowingly).