Place 1 book in the center of the crafting table
Place 2 diamonds in the left and right middle slots
Place 4 obsidian in the entire bottom row and the center bottom slot
Surround the enchantment table with bookshelves to increase enchantment levels
Place bookshelves one block away from the table
Keep the area between the table and bookshelves empty
Use lapis lazuli and experience levels to enchant items