I'm not a Holydin as often as Prot or Ret, so a few of my details may be off, but I am a Disciple of MacMoran. This allows me to give you a basic gist.
Stats, in more or less this order
:
You like Int. A
lot. It makes your mana regen go up via Divine Plea and Replenishment. It makes your crit go up, and 20% of it also becomes spell power. It is a disgustingly efficient stat. You
like int.
You like spell power. Big numbers. Next.
You like crit. You'll have a lot of it, especially on Flash of Light used with Sacred Shield. Holy is built around crits. Illumination makes them return mana, and Infusion of Light makes critical Holy Shocks give you instant FoL's. Instant FoL's are
good.
You like haste. Even with
Beacon of Light and the AoE glyph for Holy Light, pallies still find themselves in trouble when lots of people are taking damage all at the same time. The lower you can get that GCD and the faster you can fire your spells off, the better! You get a lot of free haste anyway, with Light's Grace knocking .5 seconds off Holy Light and Judgements of the Pure giving you a whopping free 15%, so it's not bad to build on that.
You sorta like mana/5. It makes your mana go up, but that's all it does. It's not affected by any percentages anywhere in anything. Int is a much more efficient method of mana regen.
Gems and enchants follow the same rules. My favorite gems are pure +int for yellow ("Brilliant"), +int/sp for red ("Luminous"), and +int/mana5 for blue ("Dazzling").
Talents:
For a big numbers PvE build you'll probably want something like
this. I variate a little from most people by putting points in Pursuit of Justice instead of Improved Judgements, and a point in Aura Mastery instead of 2/2 Improved Lay on Hands. Aura Mastery in its current form sucks as a talent - a lot - but I tend to stand far away from people so the extra 10 yards is helpful to them. Pursuit of Justice is just a preference thing; it goes into all of my builds. Back in Holy again, another alternative in the Aura Mastery/Improved Blessing of Wisdom/Improved Lay on Hands area of the tree is to put points in Improved Concentration Aura instead. Since practically everything in BC had some kind of stun or interrupt, this wasn't a bad talent back then, but these days I think it's more of a PvP talent. Something else you can do is only put points in ret up to 5/5 Conviction, and use the spare 5 to be a buff-slave and pick up Kings. Group members might appreciate this if you're the only paladin, but if you're running with a ret pally you just wasted 5 points.
Addons:
I haven't been able to get
Pally Power to work since pre-3.0, but if you can figure it out it's a lot of help with managing your blessings. Also, if you figure it out, tell me how because I miss it!
Grid is a headache to set up, but once you get it wrangled it's the best thing since ever. The reason it's a headache to set up is that it's infinitely customizable. There are a lot of guides to configuring it out there.
This is the one I used; a little out of date, but still very helpful.
