Welcome on board!
The first step is to create your account. Choose any subscription you wish or try a free version. The first thing you need to do is to fill in the form with your contact details (first name/last name/email/password). You can change these details later if you wish.
After you complete the form and agree with Krock policy, your account will be automatically created. Then Krock asks you to create your own workspace. Fill in the fields or just write down the name of the workspace and you are set.