Answer:
What is it that you must give before you can keep it.
how many words are in those books
A precious stone, as clear as diamond. Seek it out while the sun's near the horizon. Though you can walk on water with its power, try to keep it, and it'll vanish in an hour.
I can be used to type and point you see. But don't forget, you can count on me. What am I?
What do you fill with empty hands?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?