How To Do Buy One Get One Free On Shopify in 2022
1. Enter your Shopify store and select "Discounts" on the left
2. Select "Create discount code"
3. Enter a code name and select "Buy X Get Y"
4. Enter your "Customer buys" and "Customer gets"
Customer buys is your X and customer gets is your Y.
5. You can also select "Customer eligibility" "Usage limits" and "Active dates"