Confused on EnchantingFollow

mats= materiels

In order to enchant things, you need enchanting mats, which are dusts, essences and shards. These are obtained by disenchanting green quality items or better, ie blue or purple. For example, if you buy a level 11-19 armor piece from the AH, or you have one you got as a drop, you will get 2-6 (approx) strange dust from it. If you do the same on a 11-19 weapon, you will more likely get 1-2 greater magic essence. These will start you off being able to do the first few enchants you learn from the trainer. As you progress through the different gear levels the materiels you acquire from disenchanting them change.


Here's a list I used while leveling enchanting to know what items to dis-enchant to get the mats I needed, although it hasn't been updated for Burning Crusade gear that should be fine as you are only level 18.

Dust and Essence:

Level 01-10: A little strange dust/lesser magic essence.
Level 11-15: Much strange dust/greater magic essence.
Level 16-20: Much strange dust/lesser astral essence.
Level 21-25: Little soul dust/greater astral essence.
Level 26-30: Much soul dust/lesser mystic essence.
Level 31-35: Little vision dust/greater mystic essence.
Level 36-40: Much vision dust/lesser nether essence.
Level 41-45: Little dream dust/greater nether essence.
Level 46-50: Much dream dust/lesser eternal essence.
Level 51-55: Little illusion dust/greater eternal essence.
Level 56-60: Much illusion dust/greater eternal essence.

Shards:
Shards come from blue or purple items (they can come from greens, but don't count on it).

Level 01-20: Small glimmering.
Level 21-25: Large glimmering.
Level 26-30: Small glowing.
Level 31-35: Large glowing.
Level 36-40: Small radiant.
Level 41-45: Large radiant.
Level 46-50: Small brilliant.
Level 51-60: Large brilliant.

If you have any more questions feel free to ask, wasn't sure what else you needed to know :)