Inforamtion about Module SEM

Hi BW Folks,

Can anyone guide me how to get to know more about SEM ?

We have some upcoming project work in SEM and i would like to involve in SEM .

Pls try to give me the SAP SEM help links and how to guides of SEM- SRM, SEM- BPS , SEM-BCS and other related douments.

Thanks in Advance.