Today, i tried to subscribe for Google Apps for two differents domains. One is for non-profit organization and the other one is for Educational. It's very simple to do the registration and configuration process if you have access to the domain.
FYI, for Educational, Google Apps team requested me to give more detailed information for the administration, but i think it has been resolved by now and i'm waiting for the DNS update next Monday since the administrator is not available until Monday.
When it's done, the email migration will likely to start on Monday
This is my first time using Google Apps and i found it very easy to be done