On Microsoft’s Technet side a webcast on Sharepoint 2007 management is made available.
From the site:
This demonstration will walk through the 3 tiered structure of management in SharePoint showing off the power and delegation providing levers for the IT Pro to control and govern the environment. The first tier shows off the power that a Site Administrator has in auditing and controlling content. The second tier shows off administration of profiles and audience management with the ability to delegate this to a business or department. The third tier shows off the central administration interface the powerful SharePoint site with tasks, topologies, events, and reports.
You can find the webcast here