The Everything Store by Brad Stone
Without making a rigorous calculation, I've felt that Amazon probably had a bigger impact on my life than Apple, so I was eager to learn more about the company and its founder.
I had mixed feelings about the book. There are hundreds of small anecdotes (Jeff Bezos and his employees used to take their lunch breaks in a local Barnes & Noble; Bezos refused to touch LaTeX; the employees of Amazon viewed it as a software development company, not a retailer) but, for my taste, too much space is devoted to personal relationships, rather than to connecting Amazon to the larger transformation of the global economy.
Also, as Bethany McLean wrote in her review, readers do not learn much about how Bezos thinks or how he views himself (we have to rely on secondary sources, like the claim that he reportedly required senior executives to read The Black Swan).