Mark Zuckerberg is probably the worst possible example to use about anything startup related other than how to use one's wealthy parents' money and connections (and the connections' money) to start a company.

Edit for further explanation: Zuckerberg's initial capital for Facebook came from his father and his father's friends. He had been tutored privately from a young age, much like Bill Gates was, and he'd already had extensive experience working in founder-like roles by the time he made Facebook. His life is best used an example to demonstrate the immense advantage being born into a life of wealth and privilege confers, not as an example for what (or what not) to do when starting up a company for the typical person. His life is so removed from that that using it as an example is tantamount to uttering gibberish.