Place 4 Obsidian blocks in a square with the center empty
Place 2 Diamonds on the left and right sides of the middle row
Place 1 Book on the top middle of the crafting grid
Craft the Enchanting Table
Place the Enchanting Table where you want to use it
Surround it with Bookshelves to increase enchantment power
Right-click the Enchanting Table to open the enchantment menu
Put an item and lapis lazuli into the table to enchant it