Article: Scroll left to select the Store tab, then press X. It's at the top of the screen. Select M and scroll right, select I and scroll right, and repeat until you've spelled out "Minecraft". It's about two-thirds of the way down the page, as there are several add-ons for Minecraft listed before it. This option is at the bottom of the screen. Doing so will take you to the payment method page. If you don't have a payment method, you must instead select Add a Payment Method and enter the method's details (e.g., a card number or your PayPal login information). Doing so will purchase Minecraft and prompt it to begin downloading to your PS4.

What is a summary?
Open the Store. Select Search and press X. Search for Minecraft. Scroll down to select Minecraft PlayStation 4 Edition and press X. Select Add to Cart and press X. Select Proceed to Checkout again and press X. Select a payment method and press X. Select Confirm Purchase and press X.