I read with interest this document posted this morning by Brjann Brekkan, Technical Product Manager at Microsoft on the Identity and Access Management Blog. I would recommend reading this document to anyone looking to understand the basics of Forefront Identity Manager 2010.
This document provides a technical overview of Microsoft Forefront Identity Manager 2010 product. The document focused on core scenarios of declarative provisioning and deprovisioning, self service management of users, groups, certificate and Smart Cards, user self-service management of passwords and policy based management. The topics covered include request processing, provisioning, self-service, customizing FIM, reporting and overview of the deployment architecture.