Step 1: Create an your account on Shopify partners by using
https://partners.shopify.com/signup .
Step 2: Create a public application from your Partner Dashboard
Step 3: Go to all app for left sidebar and click on created app, after that use key and secret for channel connection
Step 4: Create store on https://accounts.shopify.com/
Step 5: Login store and use base url for store to channel connnection and add Use orders, Customers and Product
To create an app:
Click here for more details
