While we roll out the new Google Groups, we'll be keeping the classic version of Groups around for a while so you can make the transition at your leisure. If you're new to Groups, however, we recommend starting with the new Google Groups as soon as it becomes available. Learn more at our FAQ.
Using Google Groups (classic)
Using Google Groups (classic): Step-by-step instructions for creating and managing groups in your organization (doesn't apply for the new version of Google Groups).