The official documentation is at: http://docs.alfresco.com
The following documentation is available for Alfresco Labs:
- Getting Started with Alfresco Share. This tutorial walks you through the main features of Alfresco Share.
- Getting Started with Alfresco SharePoint Protocol Support. This tutorial walks you through the main features of managing content through Microsoft Office.
- Online Help - you can access online help from the assoicated web client