Manoj,
Just adding to what Sujeetha mentioned.
Green tea will not taste as your regular black tea and not even look the same. It will give a dirty, light greenish color to water.
Sharing how I prepare my green tea:
You put tea bag or tea leaves in the a cup and pour boiling water (have sugar already added to water, if you want). Cover it for a minute or so and your tea is ready. In case you are using tea bag, dip in and out for a while.
Variations :
I love lemon flavor, so If you like, add few drops of lemon like me.
I love drinking warm tea, so I drink from the cup but you can keep the cup in fridge for cooling and add Ice cubes later - Iced green tea.
Some people use honey instead of sugar, I don't.
Hope this helps.