Need practical advise to trade in NIFTY Option

Dear Friends,

Good to be a part of traders family!

I started NIFTY option trading 3 months ago. I need guidance from experienced NIFTY option traders on the following:

1. How to spot entry points for put or call option
2. How and where to set stop loss
3. How to spot changing trends

I know basics of indicators, but I need practical comments from those who understand behavior of NIFTY options better.

Thanks for your kind attention.

vjagra