This is more complicated than you may think. Click start, then select a difficulty. A range should show. A blue diamond will begin to move along your Aim bar. There is a wind variable. If the wind is high, like 10, then you would want to press space when the blue diamond is a bit to the right of the green area. If the wind is low, like -10, then you would want to press space when the blue diamond is a bit to the left of of the green area. Then you move on to Power. A yellow shape will begin to move up a bar. Press space when the shape is nearest to the green area, but not too late or it will drop back down to red.
Enjoy! My record on Easy is 376.702 yards!