When you find a physical book in Quest, write down its call number, and then go to the shelves.
To use call numbers, read them from the top down.
For example, here's how you'd find this book:
Books are shelved according to Library of Congress Classification. In this system, the library is divided into twenty-one broad subject areas, each of which is assigned one letter of the alphabet.
Books about history are assigned to the letters C, D, E, and F. Within these areas are the following two-letter and three-letter codes:
C -- Auxiliary Sciences of History (General)
D -- World History and History of Europe, Asia, Africa, Australia, New Zealand, etc.
E-F -- History of the Americas
For more detailed information on how books are arranged within these areas, see these PDF guides:
If Simpson Library doesn't have the item that you're looking for, you can have it sent from another library. This is called interlibrary loan, and it's a free service.