Buy X get Y

Step 1 : From store dashboard, go to Discounts

Step 2 : Type a statement that will appear to the customer while checkout

Step 3 : Determine whether the discount will apply on minimum amount of purchase or minimum quantity of items

Step 4 : Determine the items the client buys from specific products or specific collections by browsing

Step 5 : Choose the customer will get items free or with a percentage discount from which collection or products