CRM T-codes

Hi CRM GURU's

Currently i have been assigned to LUBES implementation project in SAP BI 7.0

Now i should develop the data model integration with CRM as a source.

I am new to CRM system which i need to understand the basic t-codes to install the BC, Custom Extractors, and Generic.

Could any one please list all the tcodes where can i found.

Regards,

Venkat.