I have listed below the Group Policy webcast series my team did a while back.  The information is as valid now as it was then for Windows Server 2003 environment and earlier.  We expect to put out a new Windows Server 2008 Group Policy series in the near future, in the meantime this is invaluable training to get yourself up to speed!!!!

Enjoy!

On-Demand Webcasts

TechNet Webcast: Group Policy Fundamentals (Part 01 of 14): Introduction to Group Policy (Level 200)

TechNet Webcast: Group Policy Fundamentals (Part 02 of 14): Applying Group Policy (Level 200)

TechNet Webcast: Group Policy Fundamentals (Part 03 of 14): Creating and Editing Group Policy Objects (Level 200)

TechNet Webcast: Group Policy Fundamentals (Part 04 of 14): Managing Group Policy with GPMC (Level 200)

TechNet Webcast: Group Policy Fundamentals (Part 05 of 14): Managing Group Policy Operations with the GPMC (Level 200)

TechNet Webcast: Group Policy Fundamentals (Part 06 of 14): Group Policy Processing Behavior-Initial Processing of GPOs (Level 200)

TechNet Webcast: Group Policy Fundamentals (Part 07 of 14): Group Policy Processing Behavior-Using Objects to Affect GP (Level 200)

TechNet Webcast: Group Policy Fundamentals (Part 08 of 14): Group Policy Administrative Templates (Level 200)

TechNet Webcast: Group Policy Fundamentals (Part 09 of 14): From Basic to Advanced: Security (Level 200)

TechNet Webcast: Group Policy Fundamentals (Part 10 of 14): From Basic to Advanced: Security Templates and IPSEC (Level 200)

TechNet Webcast: Group Policy Fundamentals (Part 11 of 14): Designing and Planning Group Policy (Level 200)

TechNet Webcast: Group Policy Fundamentals (Part 12 of 14): Managing Your Group Policy Environment with GPMC (Level 200)

TechNet Webcast: Group Policy Fundamentals (Part 13 of 14): Troubleshooting Group Policy (Level 200)

TechNet Webcast: Group Policy Fundamentals (Part 14 of 14): Group Policy Best Practices (Level 200)