Want to know a little more about some of the “hidden” parts of Firefox’s configuration? Well, over at JiggedyJoo (I just typing that) they have gone through just about all of them very quickly. This would be a good spot for a beginner to learn about such things as “about:config”.
Quite a few people know about the about:config page of Firefox, but there are more options than that under the hood of everyone’s favorite browser.
To peruse the contents of the cache, you can enter about:cache into the address bar, hit and look through. This has the advantages of being able to look at content stored locally, great if the connection breaks, or if the material on the site gets taken down / removed.