Checking out is *very* easy. Just read the directions here: http://www.turbogears.org/community/contributing.html
There are a couple of odd issues outstanding today, but you can work around them: http://turbogears.blogspot.com/2005/10/halloween-svn-issues.html But, if you still don't like that, William has put together nightly tarballs: http://www.opensource4you.com/nightly_tarballs.shtml
