Assessment will take place at IBF in Saarlouis, Germany.
After a medical, you will pass approx. 6hrs behind a computer doing all kind of tests. Some of the typical IQ-questions, some coordination, concentration and multitasking excersises. And a lot, I mean A LOT of personality questions. (Are you a violent person? Are you shy? Do you believe in some sort of supernateral-scientificly-nonexplainable force? ...)
So basiclly not much you can prepare for apart from having a good nights rest the night before ...
Enjoy!