We are running a test setup of Google App for education for the Faculty of Computer science under the http://gogo.unibz.it domain.
You can access Google Apps directly from http://mail.google.com/a/gogo.unibz.it after you have set your password. On this page you will also able to get you email@example.com login.
The service is provided with support based on best effort.
Once you have set you password ad have logged in you can manage your account from this page https://www.google.com/accounts/ManageAccount
Here by following the Edit link under Multiple sign-in you can activate multiple accounts for the same browser session, for example to be able to quickly switch to and from your preexisting private Google account. A logout from Google is required for the activation of this feature.
Please see also http://www.google.com/support/accounts/bin/answer.py?answer=179235&hl=en