To get started with Shopify, first click to connect a Shopify account in your zap.
Next, you'll name this Shopify account. The name can be anything you want, it is only used to help you identify the account inside of Zapier. You will also provide the subdomain of your Shopify account.
You should then get a pop-up window from Shopify asking you to log-in to authorize the connection between that Shopify account and Zapier.
After logging in, you'll get sent back to your zap where you now have your Shopify account connected!