Active Directory/GPO Guides
Posted by Awinish on July 2, 2011
Post-Graduate AD Studies
Everything you need to get started with Active Directory
Infrastructure Planning and Design
AD DS Design Guide
Active Directory Domain Services Operations Guide
Windows Server 2008 Step-by-Step Guides
Active Directory Design Guide by Microsoft
Remote Desktop Services in Windows Server 2008 R2: Step-by-Step Guides
Microsoft has released group policy for beginners. I saw the guide & found really helpful for beginners who actually wants to start from basics. It can be found at below link.
For reading it online, refer below.
Group policy master site(Videos,Guides etc.)
Group policy webcast series video