World of Warcraft Inscriptions Professions Guide
Inscriptions was added in WoW's second expansion, Wrath of the Lich King. Inscriptions allows players to make Glyphs which can be used to enchance your characters potential. There are two types of Glyphs, Major and Minor. Major will will greatly enhance your character in ways such as lowering cooldowns, adding more damage to an ability or giving one of your basic abilites a unique "proc".
Minor Glyphs will increase your characters potential in minor ways, like increasing the duration of a buff or reducing the mana cost of some spells. Inscriptions also gives the player the ability to Mill herbs, allowing you to pull pigments out of some herbs which allow you to make ink.
Leveling Inscriptions 1 - 125
Inscriptions 1 - 19
Craft - 
[Ivory Ink] x 18
Materials Required:
18 Alabaster Pigment
Inscriptions 19 - 35
Craft - 
[Scroll of Stamina] x 16
Materials Required:
16 Ivory Ink
16 Light Parchment
Inscriptions 35 - 53
Craft - 
[Moonglow Ink] x 22
Materials Required:
44 Alabaster Pigment
Inscriptions 53 - 75
Craft - 
[Armor Vellum] x 22
Materials Required:
22 Moonglow Ink
44 Light Parchment
Inscriptions 75 - 80
Craft - 
[Midnight Ink] x 20
Materials Required:
40 Dusky Pigment
Inscriptions 80 - 100
Train new glyphs at 90 and create them till 100. They will be light red to you.
Craft - 
[Glyph of your choice] x 20
Materials Required:
20 Midnight Ink
20 Light Parchment
Inscriptions 100 - 105
Craft - 
[Lion's Ink] x 60
Materials Required:
120 Golden Pigment
Inscriptions 105 - 120
Craft - [Glyph of your choice] x 20
Materials Required:
20 Lion's Ink
20 Common Parchment
Inscriptions 120 - 125
Train new Glyphs at 120 and create them till 125. They will be light red to you.
Craft - [Glyph of your choice] x 5
Materials Required:
10 Lion's Ink
10 Common Parchment
Inscriptions 125 - 200
Inscriptions 125 - 133
If you've been milling your own herbs turn your 
[Burnt Pigment] into 
[Dawnstar Ink]. If you haven't make Glyphs till 133.
Inscriptions 133 - 141
Craft - 
[Strange Tarot] x 8
Materials Required:
16 Lion's Ink
8 Dawnstar Ink
8 Common Parchments
Inscriptions 141 - 150
Craft - 
[Glyph of Lightning Bolt] x 13
Materials Required:
26 Lion's Ink
26 Common Parchments
Inscriptions 150 - 155
Craft - 
[Jadefire Ink] x 60
Materials Required:
120 Emerald Pigment
Inscriptions 155 - 175
Craft - 
[Glyph of your choice] x 20
Materials Required:
20 Jadefire Ink
20 Common Parchment
Inscriptions 175 - 185
Turn your 
[Indigo Pigment] into 
[Royal Ink] if you're Milling your own herbs. Then use all your Royal Ink to make [Arcane Tarots], until you're out of ink. This should get you to 185 or more.
Inscriptions 185 - 190
Craft - 
[Glyph of Sap] x 5
Materials Required:
10 Jadefire Ink
5 Common Parchment
Inscriptions 190 - 200
Craft - [Glyph of Revenge] x 13
Materials Required:
26 Jadefire Ink
13 Common Parchments
Inscriptions 200 - 250
Inscriptions 200 - 205
Craft - 
[Celestial Ink] x 50
Materials Required:
100 Violet Pigment
Inscriptions 205 - 210
Craft - 
[Armor Vellum II] x 5
Materials Required:
5 Celestial Ink
10 Common Parchment
Inscriptions 210 - 215
Sell these in the AH.
Craft - 
[Glyph of Sinister Strike] x 5
Materials Required:
5 Celestial Ink
5 Heavy Parchment
Inscriptions 215 - 220
Craft - 
[Glyph of Searing Pain] x 5
Materials Required:
5 Celestial Ink
5 Heavy Parchment
Inscriptions 220 - 225
Craft - [Glyph of Starfire] x 5
Materials Required:
5 Celestial Ink
5 Heavy Parchment
Inscriptions 225 - 230
Craft - [Scroll of Agility IV] x 5
Materials Required:
2 Celestial Ink
2 Heavy Parchment
Inscriptions 230 - 235
Sell these on the AH
Craft - 
[Glyph of Dispel Magic] x 5
Materials Required:
5 Celestial Ink
5 Heavy Parchment
Inscriptions 235 - 245
Craft - 
[Weapon Vellum II] x 12
Materials Required:
12 Celestial Ink
12 Fiery Ink
24 Heavy Parchments
Inscriptions 245 - 250
Craft - [Glyph of Cleaving] x 5
Materials Required:
5 Celestial Ink
5 Heavy Parchments
Inscriptions 250 - 305
Inscriptions 250 - 255
Craft - 
[Shimmering Ink] x 25
Materials Required:
50 Silvery Pigment
Inscriptions 255 - 260
Craft - 
[Scroll of Spirit II] x 5
Materials Required:
5 Shimmering Ink
10 Heavy Parchment
Inscriptions 260 - 275
Craft - [Glyph of your choice, or scroll] x 15
Inscriptions 275 - 285
Craft - 
[Ink of the Sky] x 10
Materials Required:
10 Sapphire Pigment
Inscriptions 285 - 290
Craft - [Glyph of Sprint] x 5
Materials Required:
5 Shimmering Ink
Inscriptions 290 - 305
Craft - 
[Ethereal Ink] x 55
Materials Required:
110 Nether Pigment
Inscriptions 305 - 400
Inscriptions 305 - 325
Craft - [Glyph of your choice] x 20
Materials Required:
20 Ethereal Ink
20 Heavy Parchment
Inscriptions 325 - 330
Craft - 
[Darkflame Ink] x 12
Materials Required:
12 Ebon Pigment
Inscriptions 330 - 345
Craft - [Glyph of your choice] x 15
Materials Required:
30 Ethereal Ink
30 Heavy Parchment
Inscriptions 345 - 350
Craft - [Glyph of Whirlwind] x 5
Materials Required:
5 Ethereal Ink
5 Resilient Parchment
Inscriptions 350 - 355
Craft - 
[Ink of the Sea] x 95
Materials Required:
190 Azure Pigment
Inscriptions 355 - 360
Craft - [Scroll of Spirit VII] x 5
Materials Required:
5 Ink of the Sea
10 Resilient Parchment
Inscriptions 360 - 365
Craft - [Scroll of Intellect VII] x 5
Materials Required:
5 Ink of the Sea
10 Resilient Parchment
Inscriptions 365 - 370
Craft - [Scroll of Strength VII] x 5
Materials Required:
5 Ink of the Sea
10 Resilient Parchment
Inscriptions 370 - 375
Craft - 
[Scroll of Agility VII] x 5
Materials Required:
5 Ink of the Sea
10 Resilient Parchments
Inscriptions 375 - 380
Craft - 
[Snowfall Ink] x 5
Materials Required:
5 Icy Pigment
Inscriptions 380 - 385
Craft - [Glyph of your choice] x 5
Materials Required:
5 Ink of the Sea
Inscriptions 385 - 386
Craft - 
[Northrend Inscription Research] x 1
Materials Required:
3 Ink of the Sea
5 Resilient Parchment
Snowfall Ink
Inscriptions 386 - 400
Craft - [Glyph of your choice] x 25
Materials Required:
25 Ink of the Sea
10 Resilient Parchments
Use your Northrend Inscription Research to discover a Major Glyph
Inscriptions 400 - 450
Inscriptions 400 - 405
Craft - [Scroll of Stamina VIII] x 5
Materials Required:
5 Ink of the Sea and
10 Resilient Parchment
Inscriptions 405 - 410
Craft - [Scroll of Spirit VIII] x 5
Materials Required:
5 Ink of the Sea
10 Resilient Parchment
Inscriptions 410 - 415
Craft - [Scroll of Intellect VIII] x 5
Materials Required:
5 Ink of the Sea
10 Resilient Parchment
Inscriptions 415 - 420
Craft - [Scroll of Strength VIII] x 5
Materials Required:
5 Ink of the Sea
10 Resilient Parchment
Inscriptions 420 - 430
Craft - [Scroll of Agility VIII] x 10
Materials Required:
10 Ink of the Sea
20 Resilient Parchment
Inscriptions 430 - 450
Do Northrend Inscription Research till 450
Choosing A Second Profession
The best second profession to choose with Inscriptions is Herbalism. Herbalism will allow you to get cost free materials for Inscriptions. If you have a lot of money I recommend of course, Enchanting.
Extra Benefit With Inscriptions
With Inscriptions you will be able to get extra powerful Shoulder Enchants, and of course won't have to look for someone to make your Glyphs!
Profiting With Inscriptions
It's fairly easy, well.. Super easy to profit off Inscriptions. All you need to do is make decent Major Glyphs and sell them. Check the Auction House and learn what Major Glyphs are the most powerful and sell the best. Then make a few and toss them on the AH.