i like to learn Marketing and sales in CRM

Hi,

i am new to CRM.i like to learn Marketing and sales in CRM.Can anyone suggest me how and where to start my studies and what are all the things to learn.

i was told to study from help.sap.com.

is there any ebooks.if so, pls send it to me at rolansap@yahoo.co.in

Thanks,

Rolan