You can only use the Wii Remote and Nunchuk for The Legend of Zelda Twilight Princess on the Nintendo Wii.
No.
there are three or four (if not more) big keys in the Twilight Princess game.
You do not get Light Arrows or Magic Power in Twilight Princess, so this would be a no.
It is impossible to hack The Legend of Zelda: Twilight Princess (for the Wii). For Gamecube, you can use Action Replay. Ok well, it isn't impossible to hack the Wii version of Twilight Princess. However, I do not recommend doing it and I will not go into detail.
use the walkthroughs
most likely you will use the boomerang
Only if its on the gamecube version
One of two ways if you have killed the shadow beings in the desert you can simply warp there. If for some reason you haven't you can use the cannon in the Lake to be shot there.
use a slingshot or a bow
It's an item that will allow you to use cheats on games.
Because only zelda has the power too sense link has twilight power in him also explains him being a wolf.