ABCs of Reloading can be had from Amazon, B&N, and at least a dozen other places. Check your local gun shop they might have a copy (my local haunt even stocks hunting DVDs, go figure). Its probably the best book for a beginner as they walk you through reloading everything (rifle, pistol, shotgun; covers all types) the basics of brass, primers, powder, and bullets. Following the "How-To" section is a series of articles that may (or may not) help you figure out how to go about reloading for your specific purpose. My copy (7th Ed) covers reloading for clay sports, turkeys, steel shot, dangerous game (kinda; article is a tick weak) general hunting, benchrest, IPSC, silhouette, black powder & smokeless SASS, blackpowder hunting, and a few others I can't recall at the moment. Some articles are better than others, but they all teach you something.
After ABCs, get the Lyman Reloading Manual. After Lyman, buy Cartridges of the World. Why? Any time you have a question about a cartridge, that book will probably answer it. It covers everything from rimfires to outdated English cartridges to modern military loads to proprietary handgun chamberings. Including some really weird ones you've never heard of.
All three books shouldn't set you back more than $60 combined, and are easy to track down. And yes, they are worth the money.