To be honest, most of them are younger than me (at 23 y.o.), and even I was thought to use Microsoft Encarta at primary school. I am not sure they actually had big encyclopaedias, I basically know them from my grandparents. However, I would know how to use them. These teens seem to be discovering how it works (i.e. much like a dictionary) during the video, so they are self explanatory, it just takes a while. When Britannica announced they were doing their last run I was extremely tempted to get it, but it was way above my book budget. Now I'll probably never own one.