I've always been interested in the Star Wars movies and I'm thinking about branching out into the books and comic books. I have no idea where to start though. Are there essential books to read? I was also interested in the earliest time period in which these stories take place, the origins of Jedi's and The Dark Side. Do any of the stories take place on earth? What time period are we talking about for the films in terms of AD? Any help or suggestions is greatly appreciated.