Answer:
I have no voice but I can teach you all there is to know. I have spines and hinges but I am not a door. Once I've told you all, I cannot tell you more. What am I?
Lighter than feather and softer than silk, yet the strongest man in the world cannot hold me for more than a few minutes. What am I?
I let water fall on you while everyone else stays dry. What am I?
What is black when you buy it red when you use it and gray when you throw it away?
Itβs red, blue, violet and green. No one can reach it, not even the queen. What is it?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.