Healing in World of Warcraft is tough, often
thankless job. The fate of your party or raid members rests in
your hands, and it will be painfully obvious if you aren’t
doing your job. This latest guide to Healing in Instances and Raids
will provide several general tips and techniques that will
hopefully set you well on your way to becoming an uber leet healer.

This may seem like
silly and unneeded advice, but this basic rule is
often ignored or forgotten. In a 5 man party you are obviously expected
to heal everyone including yourself, however once you enter a 10 or 25
man raiding situation things become slightly more complicated. Not
knowing who you are healing in these larger raid situations can lead to
many preventable deaths and/or your entire raid wiping.

To read more click href="http://www.tentonhammer.com/wow/guides/general/healing-guide"
target="_blank">here.