What is it?
Subversion is a source management application. The server that we will be using is hosted by a Google Code project. The source code and content for our game is stored on the server. Subversion is able to manage code versions. If something goes wrong and we can't seem to fix it, we can revert back to an older version of the code. Subversion also allows for all of us to be using the same code. The latest stable version is always stored in one place for everyone to update from.
How do I use it?
Try out John's getting started page to jump into the basic functionality of Subversion.