This course is an introduction to the fundamentals of using Mercurial, a Distributed Version Control System (DVCS). It begins by showing how to use Mercurial as a local, stand-alone source control system. Then it introduces working with a Mercurial server by showing how to get files into and out of a hosted repository. Finally it shows how to create and merge branches. Topics covered include source control, distributed version control, branching, cloning and merging. After viewing this course, the viewer should have the basic skills necessary to evaluate Mercurial as a replacement for their existing version control system, or to be productive using Mercurial if joining a team already using it.