Download details: SharePoint Portal Server 2003 Discovery Kit

This looks interesting, I've not had a chance to go through it in detail, but it's bound to be very useful. Here's more from the site itself:

Overview
The SharePoint Portal Server 2003 Discovery Kit includes a series of discovery labs that go beyond learning about a particular component of SharePoint Portal Server 2003 to understanding how to build a divisional portal site solution, how to deploy Web applications that integrate tightly with the portal site environment, how to use SQL Server 2000 Reporting Services to track and analyze portal site usage, and lastly, how to customize the portal site user interface.

There are 6 labs in the SharePoint Portal Server 2003 Discovery Kit. The lab manuals includes a description of the business scenario that is addressed by the lab, the teaching objectives of the lab, step-by-step instructions, dependencies for each lab and the expected amount of time needed for the lab assuming a basic familiarity with Windows SharePoint Services and limited SharePoint Portal Server 2003 experience.