Please check BSEINdia dot COM site.. or NSEINdia dot Com
To trade in BSE/ NSE, your broker need to provide this facility. I might be wrong, but I don't think you can open trading account with indian broker as they will require indian bank account. If you have bankaccount in Bangladesh then please check with local brokerage house if they are offering the facility to trade Indian mkt.
And even if, u can't trade indian mkt, enjoy the learning and sharing of experience on Traderji.
Happy Trading.