Hi,
there's a quick guide here:

www.selfget.com/downloads/file/10-tagmeta-quickguide-j15.html

I'm working on updated online documentation. It will be available here:

www.selfget.com/documentation.html

Meanwhile, I'm here to support you. As you will see on the guide, URL is a regular expression (it allows to match many URLs), so if you need to match only a single URL try this:

If you need help with initial setup we can schedule a remote support session with Team Viewer. in this case, just send me an email at info(at)selfget.com.

Kind regards,
Luigi