I'm new to the of version so forgive me for my stupidity. What do I need to get a diamond sword with sharpness V? I know how to build the library, but there's this level thing and other stuff that I don't understand. Also, should I only enchant brand new items or can they be repaired?
If you repair an enchanted item, it will lose the enchantment, so I'd recommend enchanting highly repaired items.
Enchanting is random, with a higher chance of good enchantments based on how high the level of the enchantment was. The amount of bookshelves used raises the level of the enchantment. In Update 1.3, the max level will be lowered to 30, allowing lower levels to give better enchantments. You'll also only need a ring of bookshelves one high, instead of two. I'd recommend waiting for tomorrow before you enchant diamond items with high-level enchantments. --- This is quite possibly the worst user on GameFAQs: http://www.gamefaqs.com/boards/user.php?=2426382