also do i need to have both trading and demat account or only demat account is enough

State Bank of India, ICICI bank, HDFC etc are good Banks to open Demat account. Open Trading account and Savings Bank account also with them You can have on line Trading / Investment in shares. They will teach you the online procedure.

You can get basic details for demat acct or bank at

http://tutorials.topstockresearch.com/be...

also do i need to have both trading and demat account or only demat account is enough