Which Files need to download SAP ERP ECC 6.0 from SAP site

Hi,

I am new in SAP,

I want to download SAP and install it. I am not able to get which files to download from sap site.

whether i have to download SAP netweaver or SAP ERP ECC 6.0.

Please help me to get the right download.

Thank you

Rohan Phade