Hello Megha,
you should of course check the XS Advanced developer guide (http://help.sap.com/hana/SAP_HANA_Developer_Guide_for_SAP_HANA_XS_Advanced_Model_en.pdf).
In addition the YouTube channel of the HANA Academy offers very good videos: SAP HANA XS Advanced Model in SPS 11 - YouTube
Best Regards,
Florian