Step1: write to Roger Mas and inform him of your willingness to participate in the camp.
Step2: Deposit in the following bank account IBAN ES80 0081 1619 7300 0110 9213 BIC/SWIFT code: BSABESBB or BSABESBBXXX Step3: Send a new mail to Roger Mas informing him of your deposit. He will mail you back that the deposit has gone through correctly.