Few of us are experts on any given topic. As a general rule, looking for background information on your topic help provide context and facilitates the process of research.
Finding background information can be tricky but here are some things to consider:
Keep in mind that many such works are indexed in online collections and are often available in full-text. Here are the most relevant Online Refernce Sources:
WorldCat provides a quick and easy way to find books and other physical items when you are looking for information on a specific subject. This is a great way to explore the general availability of books on your topic. If you have checked the Library Catalog for a particular book or item and the library does not have it in the collection, search for it here and place an Interlibrary Loan request.