How do you download Google flight simulator.?

my dad said if i found it he would download it for me plz help it seems pretty coo.:)How do you download Google flight simulator.?
If you have google earth already,i paid for the 2Yr subsciption,

all you have to do is click on the tools (top right hand side) and it will come up flight simulator ,I have a viper fighter plane, and a Cherokee single engine,

All i keep doing is crash and burn

hope this helped you will enjoy it

Have a good one mate