Hova4Ever9, I would suggest you start with Puzo's first novel, "The Dark Arena". It is a very good read, and offers something different to The Godfather. After all - what better place to start than the beginning?
Regards.
"Jonny Tightlips... you're shot! - whered' they get you?" "I ain't sayin' nutin'." "But what'll I tell the Doc?!" "Tell'um to suck a lemon."
