In the South Financial District here [in San Francisco] — close to a growing number of start-ups — Nasdaq is in the midst of building what it calls its Entrepreneurial Center, a 13,000-square-foot space aimed at teaching future generations of Mark Zuckerbergs how to create and run successful businesses...When the center is finished, probably this fall, entrepreneurs will walk into a sprawling space that is part school, part hangout and part broadcast studio. Visitors will be able to attend educational forums and classes to learn the basics of running a business, from writing a business plan to raising the initial funds to get a company off the ground. [Dealbook]