How many people follow my blog?

This is just one of the many questions I have being that I am new to all this blogging stuff.

What is Tecnorati? http://technorati.com/

What is Digg? http://digg.com/

How do I ad advertisements to my blog?

How do I market and sell said advertisements?

How do I get my blog listed in the search engines like Google? http://www.google.com/

Woe is me-woe is me. Where do I begin?