A handy guide to give you some basics of ball pythons, but a bit outdated (copyright 2000 and all..) so should not be taken as the golden standard. It seemed to suggest housing multiple snakes together as being a good idea, while not actually outright saying it. (The recommended tank size specified was "good for two ball pythons", and a few other times the phrasing indicated two or more snakes together.) Not the worst I've read.. just a bit old. (It was given to me by a friend, because I mentioned my interest in BPs.)