Oh wait. I'm ******ed. Sorry. Why else would you ask in this forum? My RC must be a fluke.
The only real notes I were for Chad's stuff. I actually referred to them a lot during my second semester of OCHM. (Yes, I braved the DAT without finishing OCHM. Not the best idea.) If anything, I penciled a couple bullet points or terms here and there for stuff I was not great on. More than anything, the writing was just to help remember it. I never went back and read them or anything. It just seemed like there was way too much material to get through to take a lot of notes and then re-study those notes.
If you're using books, I suppose highlighting and margin-jotting would be quick and effective.