Tracking books and reading lists

We're living-in-the-future where the combination of portable computers (smartphones, tablets, etc.), digitization of media and the Internet as a delivery mechanism means that we have an unprecedented access to a variety of media (books, audiobooks, articles, podcasts, movies, TV shows). The ability to record & store media effectively means that we can time-shift media that was formerly broadcast and consume it in our own schedule. So, amidst the myriad possibilities, how do you decide what to pay attention to? How do you keep track? Official GTD® Virtual Study Group website: http://gtdvsg.com