Books are a unique type of source. They can present an in-depth discussion on a topic or a broad overview of a topic; sometimes both. Unless classified under Leisure, the books in the library are scholarly in nature and are an important body of scholarship that supports your regular class texts.
There is more to books than just their pages. Use the index and table of contents to help you generate keywords or even topic ideas. Use the bibliography or works cited to lead you to additional related research.
AlemanyLibrary. (ND). Books: Library of Congress call numbers [PowerPoint slides]. Retrieved from http://www.slideshare.net
Keep a copy of one of these books nearby when you are writing your papers, they are good resources for citing your materials. Your professor's may have a preferred citation style; carefully read your assignment or check with your instructor.