Location: Free Tools » Resources
To start with, there is my gptalk mailing list, which is a group dedicated to Group Policy questions and solutions.
Another good resource for help on GPOs, and pretty much everything else related to Windows, is Mark Minasi's Forum. There's a forum group on that site specifically focused on Group Policy, which I moderate on, found here.
A Group Policy blog that you can read and comment on.
Jeremy Moskowitz, author of the popular GP book, "Group Policy, Profiles, and IntelliMirror for Windows 2003, Windows 2000, and Windows XP" maintains an excellent Group Policy community forum at his website www.gpanswers.com. Jeremy also provides Group Policy training classes for folks who want to learn more about Group Policy from an expert in person. Check it out!
Mark Heitbrink's excellent German Group Policy site http://www.grurili.de/
Hans Straat's www.datacrash.net, which has policy and other related Windows information