An enchanter can enchant their own items as well as other character’s items. The enchanter will usually offer their services to others across the main chat channel. Other players will privately respond to the enchanter and they will do their business. The enchanter can increase attributes such as: strength, agility, stamina, intellect, spirit, critical strike rating, etc. The enchanter, to make their wages, usually adds a fee for the enchanting, besides the cost of the materials.
The enchanter, like most crafting professions, needs to have consumable materials. The enchanter also needs to have a non-consumable, runed rod (similar to the various tools of blacksmithing, engineering and jewelcrafting) of the appropriate type to apply enchantments. The enchanter does have the option to opt out of gathering consumable materials and just buy the enchanting supplies at the auction house, but that is a very costly way to do enchanting. The way to gather enchanting materials are by disenchanting magical quality armor or weapons into dusts, essences, shards, or crystals. These items are denoted magical quality by their name color in green (uncommon item), blue (rare), and purple (epic). The materials gained can then be used for enchanting. The materials that the enchanter gets from disenchanting these items can be sold at the auction house just like the materials from any gathering profession.
With the advent of the Inscription profession, enchantments can be applied to vellums to be used later to apply the enchantment to an item by the purchaser of the enchanted vellum. This allows enchantments to be more portable and sold on the auction house.