The document provides an overview of different information sources and their uses and characteristics. It discusses books as providing overviews and history with different theories while journals look at specific up-to-date academic research issues. It notes government and organization documents can be found online. Audiovisual sources are described as easier introductions that may not be as accurate. The rest of the document summarizes several medical and research databases, listing their contents, coverage dates, subject areas and whether they contain full text articles.