I have a grueling 1 hour train commute to go to college here in NYC, which totals to 2hrs a day of unproductive time. So as a result I would like to turn my wasted time into something useful, which would be some good non-fiction, insperational, IM, advertising,money, and sales audio-books. All recommendations are welcome. Thank you in advance. P.S. I would just read a book but I take the trains during rush hour so there is no space for any of that.