Leatherworking

Apprentice Leatherworking
Levels Craft Light Leather
1-45 50 Light Armor Kit 50
46-55 10 Hand-stitched Leather Cloaks 20
Totals: 70
Journeyman Leatherworking
Levels Craft Light Leather Medium Leather
55-100 45 Embossed Leathergloves 135
100-120 20 Fine Leather Belts 120
120-135 15 Dark Leather Boots 60
Totals: 255 60

* Keep at least 6 Thick Armor Kits and at least 2 Nightscape Headbands for your leatherworking quest.
Expert Leatherworking
Levels Craft Medium Leather Heavy Leather Cured Heavy Hides Iron Buckles Thick Leather
135-155 20 Dark Leather Pants 240
155-165 10 Hillman Leather Gloves 140
165-180 15 Heavy Armor Kits 75
180-190 10 Barbaric Soldiers 80 10
190-195 5 Barbaric Harnesses 70 5
195-205 10 Dusky Bracers 160
205-220 15 Thick Armor Kits* 75
220-225 5 Nightscape Headbands* 25
Totals: 380 385 10 5 100

Pickup the Wild Leather quests given by Pratt McGrubben (Alliance) or Jangdor Swiftstrider (Horde) both found in Feralas. *ed quests will create items used to complete these quests.
Artisan Leatherworking
Levels Craft Thick Leathers Turtle Scales Heavy Silken Thread
225-227 2 Turtle Scale Breastplates* 12 24 2
227-229 2 Turtle Scale Gloves* 12 16
229-230 2 Nightscape Tunics* 14
230-232 4 Nightscape Headbands* 20
232-233 2 Turtle Scale Bracers* 16 24
233-235 2 Turtle Scale Helms 28 48
235-237 2 Nightscape Pants* 28
237-239 2 Nightscape Boots* 32
Totals: 162 112 2

To become a Tribal Leatherworker you need to complete the Wild Leatherworking quests mentioned above. Then go to either Caryssia Moonhunter (Alliance) in Feralas or Se'Jib (Horde) in STV to begin the Tribal Leatherworking quests.
Artisan (Tribal Leatherworking)
Levels Craft Thick Leathers Wildvine Cured Thick Hide Rugged Leather
239-240 Wild Leather Vest 12 2 1
240-241 Wild Leather Helmet 10 2 1
241-250 9 Nightscape Pants 126
250-265 15 Nightscape Boots 240
265-285 20 Wicked Leather Bracers 160
285-300 15 Wicked Leather Headbands 180
Totals: 388 4 2 340
Master (any leatherworking speciality)
Levels Craft Knothide Scraps Knothide Leather Fel Scales Rune Thread
300-305 Knothide Leather 25
305-310 Knothide Armor Kit 20
310-320 Wild Draenish Gloves 90 30
320-330 Thick Draenish Boots 100 30
330-340 Thick Draenish Vest 140 30
340-355 Scaled Draenic Boots 180 30 45
Totals: 25 530 30 135

Leveling leatherworking to 375 is easy task. You will find around level 355â€ish that all your trainer taught skills will be either green or gray, and youâ€ll soon be forced to get some outland reputation under your belt, so you may purchase recipes. You may find the trainer who will take you from 300-375 just to the left of the inn of Honor Hold, or in Thrallmar for the Horde.
Master (any leatherworking speciality)
Levels Craft Heavy Knothide Leather Primal Might Thick Clefthoof Leather Fel Hide Arcane Dust Small Prismatic
355-365 Riding Crop* 40 10 60 10
365-370 Drums of Battle** 60 50
370-375 Drums of Panic*** 30 20
Totals: 130 10 50 20 60 10

* The recipe for the riding crop may be found at a vendor in the Caverns of Time: Durnholde event. The vendor will appear at the end of the instance

** Requires honored with Sha'tar (Run Tempest Keep instances for reputation)

*** Requires honored with Keepers of Time (Run Caverns of Time instances for reputation)

As far as efficiency is concerned, the fastest way to level your final levels is listed above. Most final patterns as you level them will be red, giving you a 99% chance to level up. However, most of them do require reputation, and as such you will need to run a lot of instances. Have fun!
Levels 350-450: Wrath of the Lich King
Submitted by FlippyDoo

The "Total Amount Needed" in this Guide assumes that you will get 1 skillup from every item, even if they are Green or Yellow. Obviously this is hardly ever the case, so plan on making 1-3 extra items if they are Yellow, and 2-5 extra if Green.
350-380

Borean Armor Kit (4 Borean Leather) - Total Amount Needed: 120 Borean Leather
380-385

Arctic Boots (8 Borean Leather) - Total Amount Needed: 40 Borean Leather
385-395

Arctic Shoulderpads (10 Borean Leather) - Total Amount Needed: 100 Borean Leather
395-410

Arctic Wristguards (12 Borean Leather) - Total Amount Needed: 180 Borean Leather
410-415

Fur Lining - Attack Power (You can also use the Stamina one here). (1 Arctic Fur) - Total Amount Needed: 5 Arctic Fur

OR Dark Frsotscale Leggings (4 Heavy Borean Leather + 5 Crystallized Water) - Total Amount Needed: 20 Heavy Borean Leather, 25 Crystallized Water

OR Dark Iceborne Leggings (4 Heavy Borean Leather + 5 Crystallized Shadow) - Total Amount Needed: 20 Heavy Borean Leather, 25 Crystallized Shadow
415-420

Pack of Endless Pockets (8 Heavy Borean Leather) - Total Amount Needed: 40 Heavy Borean Leather
420-425

Fur Lining - Attack Power (Again, you can also use the Stamina one here). (1 Arctic Fur) - Total Amount Needed: 5 Arctic Fur

OR Swiftarrow Bracers (8 Heavy Borean Leather + 1 Eternal Air) - Total Amount Needed: 40 Heavy Borean Leather, 5 Eternal Air

OR Stormhide Wristguards (8 Heavy Borean Leather + 1 Eternal Water) - Total Amount Needed: 40 Heavy Borean Leather, 5 Eternal Water

OR Overcast Bracers (8 Heavy Borean Leather + 1 Eternal Water) - Total Amount Needed: 40 Heavy Borean Leather, 5 Eternal Water

OR Eviscerator's Bindings (8 Heavy Borean Leather + 1 Eternal Air) - Total Amount Needed: 40 Heavy Borean Leather, 5 Eternal Air

The above Patterns are sold from an NPC in Dalaran: http://www.wowhead.com/?npc=32515
425-430

Any Dalaran Vendor Pattern that Requires 425 LW and costs 10 Heavy Borean Leather + 1 Eternal (There are several) - Total Amount Needed: 50 Heavy Borean Leather, 5 Eternals
430-440

Frosthide Leg Armor (2 Arctic Fur + 2 Nerubian Chitin) - Total Amount Needed: 20 Arctic Fur, 20 Nerubian Chitin

OR Icescale Leg Armor (2 Arctic Fur + 2 Icy Dragonscale) - Total Amount Needed: 20 Arctic Fur, 20 Icy Dragonscale

440-450

You can either keep making Leg Armors until grey up to 445, or begin making the Epic gear patterns from Dalaran early, at 440. These require Frozen Orbs which are like Primal Nethers and only drop from heroics. You can view these Epic patterns at the http://www.wowhead.com/?spells=11.165#0-7+1

eccolo il lw di gilda se vi serve qualsiasi cosa chiedete pure.................