This document provides an overview of fair use and the four factors used to determine if a use of copyrighted material is considered fair use: purpose, amount, nature of the work, and effect on the market. It explains each of the four factors and provides examples. It also describes a balancing test where all four factors are considered to determine if a use falls under fair use. The document concludes with two examples for the reader to consider the fair use factors and determine if the use is likely fair use or not.