To create a new customer account with Domains.coop, you need to go to the following URL and click on My Account Login in the top right corner:
https://store.domains.coop/
1. Click on Login/Register in the top right corner > Create Account
2. Enter your details and set a secure password > Submit
Please note that if you want to register .COOP domains than you must change the Account Type from 'Personal' to 'Organisation'.