Man this thread is useful. Im currently in the process, still have to set an assessment day date. I found the JOES day testing to be not too challenging, while the pilot specific testing I found hard. During the fuel/distance/time calculations I thought I had failed, but allas I passed. Im quite concerned about the whole life expirience, considering im still in grade 12, but anyway, the AAFC bulletin has some great info on pilot specific testing.
oh and there is a certain amount of study you can do for pilot specific testing, as the recruiters will tell you you cannot study. Example, try the New Zealand Air Force recruiting, they provide some practice questions.
