Many local public libraries have automotive sections filled with books that can help you. Some are pretty dry and straightforward, like Haynes and Chilton manuals for specific makes and models. Those will come in handy once you have a better grasp on what you're doing and are actually working on cars. Others are aimed at helping you understand general automotive principles a bit better. If you have an active library card, check out your library's online resources for database access to ChiltonLibrary. This online database has the most recent, accurate information available on every car it covers. If your library only has older car books in its collection, hit up this database for the latest and greatest.