Credits go to this page on Mabinogiworld wiki: Enchant - Mabinogi World Wiki
You should read that too if you want to train this skill.
Very important: You need to equip a magic powder and a scroll to train the skill.
Tip 1 - If you are not going to provide public service for Rank 8, try to keep all your burns (enchanted items) on mule accounts. Good choice of enchant items will be gathering knives (50 gold), cheap store hats (300-600 gold), bracelet (300 gold) and tailoring kits (200 gold). If you have to enchant a 2-h equip, use a weeding hoe. For shields, use cooking table. Stock up on holy water and sunlight herbs for this rank.
Tip 2 - If you were smart enough to keep extras of Arrow Revolver/Fireball books, you can use this method to train up enchanting. Equip magic powder and book pages and then enchant using Enchant skill. Popular pages are 1, 2 and 5, 6 (Also 7, 8 for Fireball). It doesn't hurt to keep more prepared books for the other pages people might send you, and also if you screw up enchanting back a book to page 1/2. Note that you will only get successes from training, and unlike the regular enchant scrolls you won't have any enchanted items if you keep using this method.
Tip 3 (thanks to EndlessDreams): You can get a lot of letter rank enchants from treasure boxes on Fishing Boat in Iria, provided you do this with a lot of mules fishing together.
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Novice
Just equip a magic powder and you’re done. - 100.0
Rank F
Get a success 20 times – 60.0
Do all magic powder/enchant scroll from the burn requirements. – 40.0
OR
Do all 20 fails – 20.0
Do 27 successes. – 80.0
(A mixture of everything is also fine.)
Rank E (Toughest lettered rank; I hate this rank)
Do all magic powder/enchant scroll from the burn requirements. - 30.0
Do all 40 successes – 40.0
Do all 15 fails – 7.5
8 great successes – 22.5
(Great successes are the hardest part; advice is to just keep spamming Alby Normal.)
Rank D
Do all magic powder/enchant scroll from the burn requirements. - 20.0
Get 100 successes – 80.0
(You can do less if you get great successes or fails in between but just forecasting how many times you need to enchant based on successes)
Rank C
Do all magic powder/enchant scroll from the burn requirements. - 20.0
Get 160 successes – 80.0
(You can do less if you get great successes or fails in between but just forecasting how many times you need to enchant based on successes)
Rank B (It starts getting tough)
Do all magic powder/enchant scroll from the burn requirements. - 20.0
Get 400 successes – 80.0
(You can do less if you get great successes or fails in between but just forecasting how many times you need to enchant based on successes)
Rank A (2nd toughest lettered rank after Rank E)
Do all magic powder/enchant scroll from the burn requirements. - 20.0
Get 800 successes – 80.0
(You can do less if you get great successes or fails in between but just forecasting how many times you need to enchant based on successes)
Rank 9 (Challenge is slightly reduced. It’s still a lot though.)
Do all magic powder/enchant scroll from the burn requirements. - 24.0
Get 304 successes – 76.0
(You can do less if you get great successes or fails in between but just forecasting how many times you need to enchant based on successes)
Rank 8 (Burning hell rank)
Get magic powder from enchant burning, 800 times – 40.0
Get enchant scroll from enchant burning, 600 times – 60.0
(If you can get more enchant scrolls then you don’t need to do so much magic powder. Good luck…
You can give public service, but if you have to provide for yourself or get people to use your services, prepare a lot of holy waters and sunlight herbs. Estimate of a usage of 100-150 stacks of 10 HW/sunlights at this rank. To potion makers, avoid using your precious mana herbs.)
Rank 7 (No more burn requirements)
Get 667 successes – 100.0
(You can do less if you get great successes or fails in between but just forecasting how many times you need to enchant based on successes)
Rank 6
Get 667 successes – 100.0
(You can do less if you get great successes or fails in between but just forecasting how many times you need to enchant based on successes)
Rank 5 (No more fail requirements)
Get 1429 successes – 100.0
(You can do less with great successes if you get those)
Rank 4
Get 1429 successes – 100.0
(You can do less with great successes if you get those)
Rank 3
Get 3334 successes – 100.0
(You can do less with great successes if you get those)
Rank 2 (Almost to the top!)
Get 3334 successes – 100.0
(You can do less with great successes if you get those)
Rank 1 (If you are aiming for master title)
Get 8000 successes - 160.0
Get 2000 great successes - 60.0