Minecraft wiki entry for Armor_farming, associated text: The final step is to obtain the correct amount of levels required to put the armor and the enchanted books together. There are many methods to do this effectively. Mining coal underground is a great method of levels, and so is mining for nether quartz in the nether. You can also wait for nightfall, and kill some hostile mobs for levels too. You can even make a mob farm, or similar farms for experience.