there are a few ways to embed your tracker to Urls. If you go to the tracker page and copy you tracker then you could add it to your own links if you publish them somewhere outside hubpages.
Just behind the hubpages.com/ you insert you code starting with _ and then close it with / followed by your hub adress. So hubpages.com/_urltrackerid/hubname
Easier indeed is to use the tool in every hub. If you scroll down your hub you will finde at the end a box where you can vote and share.
Click on the share button, there is one option Link to this page, there you will find the urltracker already embeded as link.
The stats will you receive automatically if somebody via your ref link visited.