What Am I Riddles

Question: You went into the forest and got me,
you sat down to find me,
you went home with me because you couldn't find me.

What am I?

Question: Crawls over pages and fells wild beasts.
Helps guide you along in your home and on streets.

What is it?

Question: Look at my face, I am somebody. look at my back, i am nobody. What am I?

Question: I break down buildings I crumble mountains You can't see me What am I?

Question: Whoever makes me can hear me, but nobody else can.

What am I?