New Shaman - Buffing

[ryeandi]

Hiya. I'm a first-time Shaman that's really enjoying the class. Playing in groups is much more enjoyable to me than soloing so I try and do that most. I don't have much experience playing a lot of classes so I'm confused as to who I should be buffing and why. I just turned 11. I SoW everyone in my group but beyond that I've been calling for group members to ask for buffs. Some know what they want and others want everything. For mana efficiency I'd rather just buff based on class and ask for re-applies. So, which classes should I be buffing and with what?

Looking through my spell-line I have buffs for:
HitPoints
AC
agi
dex
str
sta
cha
resists

Thanks