What type of information are you looking for? The NRA's Basics of Pistol Shooting is a good starting point. For S&W specific information, the Standard Catalog of Smith & Wesson 3rd edition (Supica & Nahas) is a must.
S&W Revolver Shop Manual by Jerry Kuhnhausen.General info on Revolvers,learning the basics of how they work & tuning/maintenance without having to be an advanced gunsmith...