Book the course that you are interested in. Make sure you indicate the start date. Booking the course does not come with obligations. You simply express your interest this way.

You will get an invoice to pay 20% deposit for the course. This will make your registration valid. The deposit is not refundable, but canbe moved to other courses.

When you get close to the course you receive an invoice with the rest of the course fee. You need to pay it to be eligible to attend.