For those wanting to learn more about OpenStack, there is a new free way to try it out. http://trystack.org/ is the OpenStack Sandbox. It's great for learning about openstack and best of all it's free! That's right it's free. Just join their facebook group to request a free account. They state to 'Remember that it is a 'Testing Only' sandbox.
So what are you waiting for, get out there and try OpenStack at http://trystack.org/