"Decoded" is part memoir, part autobiography and part poetry. In this book, Jay-Z breaks down his lyrics and weaves a tale of his life and what it took to make it in the biz. Even if you are not a fan of rap, you'll develop insight into the world of rap, gain a new appreciation for that genre of music and learn what it took for a kid from Brooklyn to make it big. But you don't have to take our word for it. Here is Jay-Z being interviewed by David Letterman talking about his book, "Decoded."