EPSO preselection tests

Below are bunch of pages to prepare to epso multiple choice questions and erudition tests about European Institutions. Wiki- very conspective, could be enough to pass exam D for Assistants. May be not enough info for Multiple Choice Questions.
Europe direct- You can call or e-mail and ask any question about EU like how big is the population in EU, of course you cant do it from exam.
European Navigator- enough information to pass Multiple Choice Questions exam about EU
Part of book downloadable ViaEurope for MCQ
EUGLE just a google modified search, but EU offers it
Key figures on EU- pay attention to dates- information could be outdated