The book you get when you register for the test also seems (by DS's report) to be somewhat easier than the actual test, but it's nice to look at for the style of the questions and the kinds of things that might be asked. He didn't do the online ones, ran through the paper practice test once (in four separate short sittings, one sitting for each topic) and then took the EXPLORE. He's not a big prep kind of guy.

DeeDee