To register for the German Perl Workshop it's necessary to register at the conference system of YAPC Europe first. This step also allows you to register for YAPC Europe and other Perl workshops.
After entering your email address you will receive an email with a link that allows you to access the registration. At the registration page you can enter further information.
Afterwards you have to process a Pseudo-Payment-Step. At this point you can choose your entry fee. Then download your invoice, read the bank transfer data and pay.