most of the people that i know who rainbow briefed finished towards the bottom of the class. hth.
the tried and true method is writing them out...not rainbow briefing.
I "rainbow briefed" and am near the very top of my class. hth, ass.
Briefing is different for everyone. Some people bookbrief (just highlighting and notes in teh margins), some (albeit few) continue to type briefs/summaries. I'm sort of inbetween, in that I bookbrief the cases, and type notes on everything else in the reading.
Try stuff out. There's no tried and true method, as someone else said. You develop your own style, and you figure out what works. Part of 1L is being anal and scheduled to get your work done. The other part is a necessary "go with the flow" mentality to just sort of take things as they come and try different methods until you find something that really clicks with your learning and studying habits.
this is about the same thing that I do. I highlight important crap in the case and I write a brief little brief (hehe) in my onenote s I'll have the gist if called upon and when I go to study I wont have to look up everything in the book. I also make little notes in the margins if I see any particulary formula for analysis or anything just for quick reference. It really is dependant on you and your style of learning though. If book briefing helps you by all means do it. Most people say briefing is a "waste of time" but I did it all last year for every case and will continue doing it because it helps me.