So, your kids, nieces, grandchildren or next-door neighbors’ daughters are obsessed with One Direction, but you can’t tell Harry or Liam from Ringo. (Just kidding. There is no Ringo. That’s a different band, with an equally passionate fan base.) Don’t worry, non-Directioners. We’ve got you covered with some key information that can help you brush up before the pop group’s 3D biographical This Is Us roars into theaters on August 30.