When you reach level 40 spec reckoning and do aoe grinding. Here is a simple guide you can follow. Paladin aoe grinding. It have specs you can use while leveling, gears and grinding spot.

As mentioned by above poster the maintankadin forums is mainly catered to lvl 70 players who are planning to raid. So i think its not very useful to you at this point of play.

Basically with this spec you can easily solo 4 mobs 2 level higher then you and 6-8 mobs similar level as you with minimal down time. But you need some practice to get it right.

Pros
- Can kill alot simultaneously
- Hard to die
- Can tank instance to a certain extend

Cons
- Killing 1 mob will take as long as killing 6
- Bad against casters. This method works best on melee mobs.
- Big repair bill. I highly suggest you bring an extra shield.

Glad to have more prot pallies among us.