So, you're venturing into the blocky world of Minecraft and need a way to keep those pesky Creepers out? Building a door is one of the first essentials for any aspiring builder. Luckily, it's a breeze!
First, you'll need wood! Chop down some trees and turn those logs into planks using your crafting table. For a single door, you need six planks of the same type of wood. Arrange these planks in a 2x3 rectangle in your crafting table, and voila! You've got yourself a brand new door.
Now, find a one-block-wide space in your wall. Place the door – it'll automatically orient to face you. Right-click (or tap if you're on mobile) to open and close it. Remember, zombies can break wooden doors on harder difficulties, so consider upgrading to an iron door later. For that, you will need iron ingots and a similar crafting recipe, but an iron door requires a button or lever to open and close. Happy building, and stay safe!