Return of Reckoning

I'm basically a complete scrub when it comes to healing as a shammy. Zealot & DoK make complete sense to me, but I always underperform when I jump on my shaman.

I would love to get good at this class. Any advice?

I think most people are having trouble logging on right now. Your problem, however, looks like you haven't made sure to turn off the read only restriction on your Warhammer Online folder. Do that & once everything is working again, you shouldn't have problems.