Another question is how to develop strategy?. I mean what kind of information is required to do so?. What kind of parameter i need to take care of before hand?
A strategy comes later. First comes the observation. You need to observe the market movements. From observation comes the idea of a strategy.
Decide the time frame which you want to trade. This is the first step in formulating a strategy. Do you want to trade intraday, weekly, swing, monthly, positional? The time frame you are comfortable with will lead you to the strategy. The strategy that you think of in one TF may or may not apply in another TF. If your strategy is based on EOD then don't look at intraday charts. That will only confuse you and lead you to make mistakes. For EOD trader intraday movements is noise. Corollary: All lesser TF than the one you are trading is noise.
After deciding the TF that you want to trade, choose the security you are comfortable with. Futures, Options or Cash? Each one needs a different personality to trade. Understand how FNO works if you want to trade FNO.
Then decide which will you be more comfortable with: Only Price based systems? Only volume as an indicator? Only few technical indicators? A combination of all? There are simple systems as well as complex systems. How much complexity can you handle?
Once you decide all the three: TF, Security, Indicators, then you can narrow down the kind of systems you will be comfortable with. There are ready made systems in each of the areas (Price, Volume and Technical Indicators). Choose a couple of them and then back test them with the data available. Back test them in all kinds of mkts. If that gives you a positive expectancy then you can tweak is to suit your personality. No ready made system will suit everyone. Essentially we have to tweak the system to suit us. Corollary: All systems are personal.
Your final system should tell you clearly: Entry criteria, Position sizing, Initial Stop loss, Trailing stop loss, Scale in, Scale out and Final exit. Once the back test gives you positive result get your feet wet by trading the smallest unit possible on the system. Live trading will show up fault lines that you never thought existed. Once you iron out the fault lines, develop the all important psychology to trade the system and have immense faith and confidence in the system, you can start using it to generate the results you want.
The journey to find the system is in a way the journey to find the trader in you. Arduous but rewarding in the end.