In case you get stuck, the controls for Spirit are super easy:
Arrow Keys = Walk left and right, climb up and down ladders, climb up and down ledges, sit on benches.
Space Bar = Proceed through dialogue, interact with people and objects, cut grass, break rocks.
Enter = Main select button
Esc = Return to main menu.
And that's all there is to it! Now feel free to explore the world of spirit!