For the first time ever, fans can grab Jay-Z's latest work at the book store instead of on iTunes. Part memoir, part 'oh, is that what Jay meant?,' "Decoded," which hits stores today is about "music and the power of words -- rap as poetry," said Jay last night during a conversation with Cornel West at the New York Public Library. Jay also added that Oprah had inspired him to write the book. "Oprah was a big reason I wrote this book," he said. "We had conversations about language and the 'N' word, and while we didn't agree, we left that conversation with a better understanding..."