Any supporting links of sap to learn crm technical

Dear Experts,

I found this link of the web dynpro to learn sap web dynpro.

http://help.sap.com/saphelp_nw70ehp2/helpdata/en/47/4575fc80f81962e10000000a114a6b/content.htm?frameset=/en/3a/2232666aeb45f4b759848a4caf9c8b/frameset.htm

Is there anything like this link for CRM TECHNICAL. Please suggest me. I am only looking form help.sap.com . As it is the standarded and base.

Regards,

Sap Adherent.