This video shows you how to go to Google Analytics and set up your free analytics to give you reports on how many visitors your site is getting and where they're coming from.

The video shows you a lot of how to use the analytics, but the information on where to paste your publishers code is now out of date as the dashboard has evolved a lot since then.

In the "account details" section, you'll find the analytics code box now.

The info on how to use analytics site though is still very valid and why I included this.