The big thing about tracking numbers is monitoring changes. Step one is being able to monitor your web traffic. If you have a good stats package then you can take the day off (:o) if not then start working on getting one. We talked in some of our previous entries about choosing a good package. You can find those posts by starting here -
You can also see the whole series at a glance - just remember to scroll down to the August 9th post first - then scroll up.