Given my appalling lack of knowledge of New Zealand's geography, and the fact that I'm not likely to tour it any time soon, I decided to teach myself at least the main cities and regions. I love Quizlet, a flashcard quiz-creating programme made by MIT. Let me know how you score!
PS To play, you drag the city onto it's region, or vice versa, to make them all disappear. E.g. Auckland's region is called Auckland, so drag one Auckland onto the other.