Step 1: Check out from SVN
Open a command window and type:
svn checkout svn://orangoo.com/skeletonz_dev skeletonz_svn
This will check out everything into a new directory called skeletonz_svn. For more help about this directory read the contents of Skeletonz repository.
Step 2: Setup directory structure
So now we have the needed parts. You can't really start off yet since a Skeletonz site needs a special directory structure. This structure depends on the operating system you are running Skeletonz on (i.e. symbolic links aren't available in Windows).