Complete at least five profession-based quests at the Darkmoon Faire.
All the profession quests at the faire give you five skill ups in your chosen professions, in addition to some gold. Some of them require additional reagents that you will have to purchase ahead of time.
For Leatherworking bring: x5 Coarse thread, x5 Blue Dye, x10 Shiny BaubleFor Tailoring bring: x1 each of Coarse thread, Red Dye, Blue DyeFor Alchemy bring: x5 Moonberry JuiceFor Inscription bring: x5 Light Parchments
Crafting professions Blacksmithing, Engineering, Enchanting and Jewelcrafting do not require any additional materials to complete, nor do any of the gathering professions.
Secondary Professions also give skill ups.
For Archaeology, have x15 Fossil fragments gathered.For Cooking, bring: x5 Simple Flour
First aid and fishing do not require any additional materials.