Hi Mahesh,
If you are very much interested in reporting side, consider the following tools
--Universe Design
--Webi Reporting
--SAP Dashboards
--Crystal Reports
--Crystal Reports for Enterprise
--Analysis Services
--Explorer
If you have an overview or little hands on in BW or Bex it will really fetch you.
You will find log of information on the above topics in SCN / help.sap.com
-Sastry