The cudi is a course service where you can buy books and courses for a very cheap price. It is important to know that you can only pick up books at the cudi if you are registrated at the site (www.cudippw.be) and have ordered your books. During registration, you can choose to become a member. Membership costs 6 Euro and isn't mandatory, but gives you access to a whole lot of benefits! You get a reduction on all Psychologische Kring- activities and you pay at a lower rate for all the stuff you need from the cudi. Once you've indicated you want to become a member, you just have to go to Cudi and pay the fee. They'll give you your membership card.
If you have no idea where you can find our CUDI, check the link below:
If you want to know more about the cudi: go to www.cudippw.be