The best part is when you are going through things which you've already PR and your mind says 'this isn't useful .. keep going.'
I saved myself a ton of reading by doing that with a software manual. I came back to work the next day and told the other admin on staff 'This was a waste of paper. I read it last night and I figure there to be about 20 useful papges.' He was amazed that I'd done that, but agreed. I've not yet had to pick up that manual again.
I also have enjoyed the 'familiarity' feelings .. when you've PR'd something that you are then going through the remaining steps and its already familiar.
Yay!