Hi Lightbeam is fairly straightforward to use. Once you have installed it from the Fireox add-ons site, you should see an icon on your icon bar (on the right hand side). Make sure you have done some browsing since you installed the add-on and then click on the icon to show the connections between different sites and the third party sites that may connect them. I hope this helps, but if not please come back here and we can look into a different solution for you.