Use CannonCat to locate books the library has. If you only want print books change the collection to "Print"
Use reference books to get started, so you have some background information and have an idea what you want to find to support the points you plan to make.
e-Books are available in CannonCat but there is a larger selection through Search Almost Everything. Use the source type limiter on the left column of your results list to limit your result to just e-Books.