Answer:
I hide but my head is outside. What am I?
The more you have me the less you see. Shine a light on me and I shall flee.
I have four fingers and a thumb, but I'm not living. What am I?
Whoever makes it tells it not. Whoever takes it knows it not. Whoever knows it wants it not
What can travel all around the world without leaving its corner?
What language does a billboard speak?