See this Find Books page on the course guide. It explains how to look up a book in the Library Catalog and check it out. When you get to the library to find your book on the shelf, ask for help at the service desk and they'll explain how to navigate the shelves to find it.
Check out this Cite your Sources page of the guide. Noodletools, the citation manager we discussed in the library session and that is on this page, helps with formatting citations and identifying what type of source it is.