Trading Software

1) Trading software, - when i do trade through software provided by zerodha, i would be trading with clients of zerodha clients, or all investors connected to the exchange (nse for example).

all investors are connected to exchange

2) how is the brokerage cost of zerodha compared to others in the industry.

Zerodha is the best discount broker ... You will save around 90% as opposed to traditional brokers

3) i am a newbie in trading, theoritical i have knowledge about deriviaties , but no practical, how would you advise, - how should i start.

Do dummy trades in NSE Paathshaala

4) how much minimum investment is required started safe trading.

For safe trading, you will need minimum 50,000

5) how much time needs to be devoted.

Depends on the kind of trades you take