Instance Runs!!!

Instances are THE place for gear, xps and fun in a team setting. Up until level 60, all the instance runs are 5 man. For levels 17-21 its The Deadmines and Wailing Caverns, 20-25 it's Shadowfang Keep and Blackfathom Depths, 25-29 Razorfen Kraul, 32-40 Scarlet Monastery and Razorfen Downs.
Each 5 man team will consist of different positions that each have a job, based on class. The Tank, usually a Warrior or Paladin or sometimes a Feral Druid, holds the aggro and keeps the mobs fighting them only. This gives the Healer, usually a Priest or Paladin (Druids and Shaman can too), one target to worry about. Then you have CC, or crowd control. This limits the amount of mobs you are fighting. Rogues can Sap and Mages can Polymorph mobs to keep them from attacking the Tank until the first mob is finished. CC isn't a position itself, it is a part of being DPS (damage per second). The DPS team member can be of almost any class that is specced for maximum damage output...typically Mages, Rogues, Hunters, and Warlocks and Warriors are DPS.

Warlocks are very important in that they can use their Soulstone on the Healer. If the party is "wiped" or all killed the Soulstone can allow the Healer to self resurrect so they can resurrect the rest of the party without having to start over. More later!