online stock trading

We specialize in broking activities related to Equities, Derivatives, Commodities and Currencies and own memberships of NSE-CM, NSE-FO, MCX & MCX-SX

hello friends; I am new for the online stock trading. I want to know that how can i start online trading ? what is the best way of online trading ? is it secure ? and where is the best place. please help me ?