Enchanting System Overhaul

This mod completely changes how enchanting works.

When you open the enchanting table, you will be greeted with a modded GUI that looks something like this.

On the right hand side will be a full list of all the enchantments available in the game.

When you first start, the list will be greyed out. You will need to learn enchantments to unlock them in the enchanting table.
You can learn enchantments by finding an enchanted book, holding it in your main hand, and right clicking. If there are multiple enchantments on one book, you will learn all of them. Do note that learning enchantments will consume the enchanted book.
Unlocking an enchantment at any level unlocks all levels of the enchantment in question.

All enchantments can be found by looting chests that have enchanted books in their loot tables. Some can also be found via other methods, like librarian villager trades, fishing, or as quest rewards.

Once you have unlocked an enchantment, you will be able to apply it to items infinitely, so long as you have the materials required. These materials can be anything from string to potions, pickaxes to nether stars. Enchanting no longer costs experience, and you do not need to surround your enchanting table with bookshelves.

You can find out how to acquire each enchantment and the materials they require by visiting the Enchantments List. The list also details the maximum level obtainable for each enchantment, as well as the list of disabled enchantments.

This mod also has a Curseforge page you can visit for more information.