50 Cent is becoming quite a prolific author. He wrote an autobiography called From Pieces to Weight in 2005 He also wrote a book on power strategy called The 50th Law in 2009. Earlier this year, he put out an anti-bullying novel called Playground: The Mostly True Story of a Former Bully.
Next up, he has a fitness book called Formula 50: A 6-Week Total Body Transformation Plan. It will even include a nutrition guide. The book is coming out in January of 2013.