Harry Potter fans might think that they know the wizarding world inside and out, but J.K. Rowling's unyielding imagination leaves a lot to be remembered. Those who have only seen the films are privy to even less, sometimes vital, information which can make the movies themselves seem a bit complicated at times. The Elder Wand, for example, had only been fully fleshed after the last book's publication in 2007. And websites like Pottermore help to fill in the blanks that Potter enthusiasts are keen on knowing in order to fully grasp Harry's cultivated universe.