For Jerome Mage, owner of luxury eyewear brand Jacques Marie Mage, North Sycamore Avenue in Hollywood between Santa Monica Boulevard and Willoughby Avenue evokes a certain nostalgia. “I really fell in love with that street,” the French expat said. It is quickly becoming what Hollywood Boulevard or Sunset Boulevard of yore were in terms of retail, celebrity and buzz. And it’s now beckoning the coolest kids in L.A.Over the last few weeks, we spent time on the ground in the trendy, revived neighborhood to help give you the lay of the land. There’s lots happening there, so here’s a beginner’s guide to the bustling new commercial district, which has been dubbed the Sycamore District.