Here’s what you need to know: Brian Chesky, the chief executive of Airbnb, which is set to begin trading on the Nasdaq on Thursday.Credit…Jessica Chou for The New York TimesAirbnb set a higher price range for its initial public offering on Monday, increasing its potential valuation to almost $42 billion, a move that sets the stage for a big week for technology companies hitting the stock market and suggests that boom times are here again for Silicon Valley.The new price range of $56 to $60 a share, disclosed in an amended prospectus filed Monday with the Securities and Exchange …
