Hi Ram
With HANA suite, your database is HANA and not the oracle RDBMS
HANA stores the data in columnar format which brings down the memory footprint in a drastic way
HANA is capable of reporting in a much faster way as compared to the earlier business suite
There are courses in open.sap.com which you can do. Also, you can learn from SAP learning Hub, incase you have access to
Ajay M