Hi sihame,
first of all you have to fullfill some requirements, about school grades, age and so on. If you pass that one, a test by the DLR will follow, two days with computer tests for memory, english, dimensional awareness, concentration. Hard time....
Thereafter, one day with some more sophisticated, more ATC related test, a bit of assesment center (to check the ability of team work).
Fourth day is another english test, if I remember correctly an interview of about half an hour in english, medical exam and on the fifth day a psychologic evaluation up to 2 hours (the last two days are open about the sequence, depending on the number of test persons)
Money at the academy is about 600 €, but I wouldn't bet anything on that number
Other memories? Lot's of learning, lot of fun. Good time there but as well good to be in a real working position after that time. Best of it been the Sim.....
Have fun
Saigor