Use the W A S D Keys and Arrow keys to move it. Arrow keys move it a little, while WASD Keys move it a lot. All you do Is use the arrow keys to touch the Letter block. When your block touches it, it changes to the next letter.
This game was put together in 1-2 Hours. Its really simply to make it. This is my username for school :p If it looks wierd, well it because its my school user.