Completely Lost Rated 3 out of 5 stars

I like the idea of this add-on and when I installed it in TBird it added nice styling to Noia Fox, but I must be doing something wrong because I cannot see how it works or how to use it to change a style or do anything for that matter. I do not get the sample screen shown above.

So I tried installing it in FF and same problem. If I go to extensions and click on Stylish, I get the intro screen asking for a donation, then if I click the Manage Styles button, I get an empty window that resembes the about:config window where I assume I am to build a style from scratch somehow.

So I went to the website to click on example FF styles (still really wanting it for TBird) and the link would not work.... (maybe have to try it from K-Meleon).

I'm stumped. :( But because it added the elements I happened to want to the Noia Fox theme in TBird, I gave it 3 stars. And if there was any indication how to use it, I'd give it 5, but I think the GUI is perhaps not displaying correctly or something ...?

UPDATE: Thanks to Jason for the quick response. That video helped.

Before I re-rate the program I am curious if a previous review (https://addons.mozilla.org/en-US/firefox/addon/stylish/reviews/378084/ ) is correct that Stylish elements are not saved locally thereby allowing user's surfing to be tracked whenever a Stylish theme is used?

This review is for a previous version of the add-on (1.3). 

Check out http://userstyles.org/help/stylish , it has a screencast that gives you the basics.

UPDATE

User styles can contain images content downloaded from third party servers. As far as I know, these images will be downloaded at most once per browsing session and the request will not contain the HTTP Referer header. So the server hosting the image can know that you're using the style, but it won't know what pages you visit.