Google Book Search works just like web search. Try a search on Google Books or on Google.com. When Google Books finds a book with content that contains a match for your search terms, they'll link to it in your search results. Google Books has created reference pages for every book so you can quickly find all kinds of relevant information: book reviews, web references, maps and more.
The WRLC catalog and many of the article databases CUA subscribes to are accessible through Google Scholar.
If you are off campus, please make sure to set the preferences so that Google will show you the resources that Catholic University provides: