I've read a novel, recently, called "Neuromancian", from William Gibson. I was suprised, because many themes from this novel were in this movie. IA, Cyberspace, Cow-boys, Junkies, etc. This novel is the first from a litterature genre called "Cyber-punk". I think that anyone who liked this movie should read this novel, and vice versa. The movie took many simplifications, even unpossible things. But I liked it very much.