since u want nest for charting purpose, then open trading a/c with zerodha . i hope u already have demat a/c from broker like icici/kotak/sharekhan. u can use the client master document to map that demat a/c to your new trading a/c.
Dear Vijay,
Better if you use moneycontrol.com for your analysis.It helps u very much.It is free of cost.
There is no broker in the market without taking amc charges