cd903952_se__mySAP__mySAP_com__ERP__R3___Description
[User Group] www.4ap.de [Type] SAP Information [Description] 
This website is a real good source of information in german(!), if you start more or less new with SAP, because the author really tried to explain a lot of the general SAP (basis) functionality and always gives useful links to SAP notes or links to the SAP Service Marketplace. Unfortunately this website is in german only.