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MMORPG.com Warhammer Online Correspondent David Beamer writes this introductory article for WAR players who choose to start life as a Goblin Shaman.
You've chosen to make a Goblin Shaman, so before we go any further let me explain what you have taken on by doing so. You are a healing class and so people are going to expect you to heal, whether you want to or not, and if you choose to ignore healing you are missing out on a large part of your potential. In addition to aforementioned items you have to learn the basic class mechanic for the Shaman, how to harness the power of the WAAAAGHH!
At the bottom of your screen, you will see two Orc faces, one yellow and one red. The yellow one is Mork and the red one refers to Gork who are the Greenskin Gods. When you cast a damaging (DPS) spell the yellow face's mouth will open and the number one will appear. This indicates you have built up WAAAAGHH! for your healing spells, and if you were to now cast a healing spell it would gain a bonus to it. However, you can increase that bonus all the way up to 5, so if you cast 4 more damaging spells you would be able to cast a healing spell with a big bonus. The same applies vice versa too, so the more healing spells you cast in a row, the bigger bonus you will receive to your DPS spells, but once that spell is cast the bonus is spent and you must re-accrue the bonus.
Read the article here.