Graph Search isn't turned on automatically, so your first step is
activating the new feature in the search bar. Facebook will walk you
through it. Once Graph Search is on, Facebook prompts you to "search
for people, places, and things." Start typing. Graph Search is
supposed to recognize natural language and try to guess what you're
looking for, though that feature is hit or miss at the moment. You'll
quickly learn the phrases that will help you get to some sort of
result: "Friends who listen to Daft Punk and live in San Francisco" or
"Friends of my friends who work at TechHive." It's not exactly a
conversational way to search.
http://www.cio.com/article/736365/How_to_Use_Facebook_s_Graph_Search_and_Why_You_Would_Even_Want_To_
