To book on a class you need a login, you get this by typing your CPR no here and clicking "continue" and you will be taken to a page where you can choose between intro class and membership of the club.
Once you have chosen what you want, fill in your information and you are then redirected to a secure page where you can pay by card.
If you are under 18 years of age and want to buy membership, most banks say no to sign up for Nets, therefore your parents must fill in their CPR and account no.
Once you paid, you will receive an email with your login, and you can go to the class booking, log in and book to the class you want.
Intro classes and workshops are not memberships, but the system doesn't know the difference, therefore they are put as a membership, it is, however, just a membership for one trial class or workshop.