This is the actual repository itself, not your working directory. The directory you're looking at is where subversion will store all of your version history, logs, source code, etc in it's own database format (a series of deltas).
If this is a local repository on your computer, you can use the file://
protocol to find the actual directory structure of your repository.
Typically the workflow will be that you develop on the trunk and branches of your repository, using the tags for "snapshots", if you will, of the repository at certain points in the development cycle (such as official releases). So do an svn checkout
on file:///C:/Path/to/my/repo/trunk
and you can begin there.