Collection of links to all online documentation of System Center Operations Manager 2007 R2. This Includes:
There are separate links for reading the guide online, downloading the guide and event links to samples (Code/Reports/Etc)
System Center Catalog now on Pinpoint
Through Microsoft Pinpoint you can search for extensions and add-ons for Operations Manager, Configuration Manager, Data Protection Manager, Virtual Machine Manager, and Essentials, and the catalog will continue to be updated as new and updated solutions become available.
What an excellent blog it is about system center operation manager. I also have found valuable information from the site below: