Thanks to a tip from Eddie, I found this genuine treat (link fixed), A Citizen's Guide to Roundabouts. It's a six page brochure explaining roundabouts to Americans. Despite the fact that in Ireland roundabouts are more common than puddles, I think the roundabout was the subject of one, maybe two, lines in the driving instructions book published by the government.
The brochure makes all the roundabouts looks so easy and safe. It doesn't seem like there are too many of the extra small, mini-roundabouts we have here. Or the mega-roundabouts either. You know, those three lane roundabouts where you have to go from the inside lane to the exit in one quick maneuver.