Once you find the item you are looking for, if it's a physical book, you will want to find it on the shelf (e-books will have a direct link). The call number indicates the location of the book in the library.
If the book is in the main circulating collection, you will just see its Library of Congress call number.
All items not in the main circulating collection will indicate its specific location, i.e. Juvenile, Quarto, Folio, File Maps, Drawer Maps, Calif Docs, Gov Docs Fiche, Reference, Periodicals, Gov Docs Computer, Curriculum Guides, Spec Coll & Univ Archives, etc. See the tabs in this guide corresponding to these collections for more information.
Example from the circulating collection:
![](//libapps.s3.amazonaws.com/accounts/166374/images/General_Locating.jpg)