I've only done audio books once, and it was on a long drive from Phoenix to LA. It was confusing as hell, and seemed to take so much concentration! And that was on a book I've read a hundred times before...

They aren't for me. I'm not much of an audio learner unless it's in a movie/tv format. I've always done better by reading myself. Good luck to you though. I might start it up while I knit. My friend suggested I try it since she knits and listens to audio books all the time. I heard a lot of truck drivers use them as well.