This document introduces Creative Commons licenses as an alternative to traditional copyright. Creative Commons licenses allow creators to choose some rights to reserve for their work rather than reserving all rights automatically like copyright. There are several Creative Commons license options that allow creators to select which rights they want to reserve, such as attribution, share-alike, non-commercial, and no derivatives. Creators can combine these conditions in different ways to create a customized license for their work on the Creative Commons website. The licenses are designed to facilitate the free exchange of knowledge while still giving creators control over how their works can be used.