What are the different skills you can pick up in World of Warcraft

The skills you can pick up and train for can be divided into several different categories, Primary and Secondary professional skills and weapons skills.

Primary Proffessions: This includes the Blacksmithing, Leatherworking, Tailoring, Engineering, Mining, Enchanting, Herbalism, and Skinning. You can only have two primary proffessions at a time.

Seconday Proffessions: This includes First aid, Cooking, and Fishing. Also included is the Riding skill. This skill lets you use mounts when you buy the training and are of appropriate level.

Weapon Skills: Currently each type of weapon you can use has a related skill involved. The more you use that type of weapon, the better you get. Supposedly in the Cataclysm expansion, weapon skill will be done away with, with everyone automatically knowing all the weapon skills at max level.