Answer:
What has four legs during the day; and six or eight during the night?
I cost no money to use, or conscious effort to take part of. And as far as you can see, there is nothing to me. But without me, you are dead.
What points the way without a hand. It floats on water but exists on land?
Whoever makes it, tells it not. Whoever takes it, knows it not. Whoever knows it, wants it not
Its title means book.
I have two eyes in the front and a lot of eyes on my tail
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?