As you all know healers are really good at dungeons and boss raids in <a href="http://www.9dragonsshop.com/">9Dragon</a>.If you have just started playing healer, then this is the portion you should read.I believe you will learn some useful informations from the guide.

Clan role:
Wu-Tang: Red phoenix
The league of beggars: strategy beggar
Shaolin: diamond monk
Heavenly demon: phantom demon
The brotherhood of thieves: strategy bandit
Sacred flower: mistress of heaven

Karma: a PvE healer should use BAD KARMA [just don't forget when you kill another player you gain karma and can't gain anymore for an hour from that player].

The PvE healer build should look like this:
Strength: Everything else
Essence: For proper grinding not too much and not too low
Constitution: For proper grinding too [remember healers need 2 points for Con]
Wisdom: Enough for relic
Dexterity: Enough for weapon
Like Zan has already said in her guide you should use a minimum +3 weapon.

Clothes:
As we all know the Wild Tower and Mansion clothes really cost a lot and not anybody can afford then so I would recommend to use this:
For lower levels:
Hat: Should give VE
Jacket: violet wind and lightnings jacket
Pants: violet wind and lightnings pants
Boots: Secret solver boots [obtained at RC12 from quest]
Wristbands :Damage wristbands [100dmg for lover levels should be enough
For higher levels:
Hat: mansion/wild tower VE hat
Jacket: mansion/wild tower
Pants: mansion/wild tower
Boots: mansion/wild tower [secret solvers boots are just fine too]
Wristbands: damage wristbands [should be from 100 to 300 dmg]

Accesorie setup:
From RC:
-Clan relic
-RC BK str relic
-RC BK dex relic
-RC BK con relic
-RC BK ess relic
-an accesorie that would give or HP or VE or Both
From five dragons you should use the accesorie setup in Zans guide.