(CBS News) If you're a fan of "The Hunger Games," you're familiar with the world of Panem, the yearly Reaping, the 24 tributes and the Capitol.
If you're unfamiliar with Suzanne Collins' bestselling novel, it's likely that sentence doesn't make much sense. But if the trailers and fan hype have you intrigued, you might want some background on the book before you see it on the big screen.
Here, we provide a quick introduction to the key players in Panem, the post-apocalyptic country where the story takes place (See? You just learned something new!). Keep clicking to find out more about the cast and characters, so you're prepared when "The Hunger Games" hits theaters March 23.