Answer:
I am nothing but holes tied to holes, yet am strong as iron.
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.
An iron horse with a flaxen tail. The faster the horse runs, the shorter his tail becomes.
Many hear me, but no one sees me, and I only speak when spoken to
A beacon from home to guide your way. It can be a lifesaver on a stormy day. What is it?
I am rarely touched but often held. If you are smart you'll use me well. What am I?