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.
SAP User Groups (R/3, R/3 Enterprise, mySAP, mySAP.com, ERP, R3)
Description