Yeah, I'm sure that the various countries have different regulations and exams etc. ... though some of the more generic info about how to actually use/operate the equipment will likely be helpful.
It is mostly to prep for the exame or does it also provide a tutorial of sorts, an intro into the entire area?
Well, you can sample all the real question, and get instant feedback on whether you got it right/wrong. So you end up learning the answers to the questions at least.
As for "hints" or mini tutorials on various topics, I was thinking of adding that as a feature later, if there is demand.