You don't need to register prior to making your first Afterpay purchase.
When you are making a purchase with Zanui, simply choose Afterpay as your payment method at checkout. If it’s your first time using Afterpay, you will provide payment details as usual to complete your purchase.
Once your first order is approved, your Afterpay account is created. All you need to do is visit www.afterpay.com.au to set up a password, and you will be able to make more purchases using Afterpay by simply entering your log in details upon checkout.