how to prepare perfect green tea

I find following method best in preparing green tea.

Heat water only till around 65 - 75 degree celsius (just before water is about to boil, if you end up with boiling water, then let it cool down for around 2 mins.) 

Then pour it on the green tea leaves.

Brew for just 1 to 1.5 minutes. Not any longer !

and drink the fresh taste of green tea.

If you use boiling water and brew for long you can end up with a bitter green tea. So you will never get to like green tea. Most likely result would be that you would be left without so many benefits that green tea offers.