This tutorial introduces readers to CVS, the Concurrent Versions System, used by developers around the world to develop software in a flexible and collaborative manner. Intended for those new to CVS, this tutorial will get both general users and new developers up to speed quickly. Whether you'd like to use CVS to check out the latest sources of a particular software package, or whether you'd like to begin using CVS as a full-fledged developer, this tutorial is for you.