OK first off i have a lvl 70 holy paladin in karazhan, gruuls lair, magtheradon, and starting the eye.
Tip #1. Flash of Light is for topping off of course, if they have real low health you mayt not wanna only use the flashes
#2. Holy light if your flash of light is unable to keep up with the damage use this, if its real bad be sure to pop a Divine Favor.
#3. it is probably a good idea to put a rank one holy light next to your high ranked one, this will give you the reduced casting time buff if the fight is real hard right off the bat, and you can do alot more healing.
#4. If there is a point where a boss is doing any type of AoE or anyhting that damges the entire raid/party use Divine illumination and start popping holy lights on everyone you can while keep the tank topped off.
#5. be sure that you spam your flashes of light, if you are a good healer at all this will barely do anyhtingto your mana.
ok and i will show my talent tree and an explanation of certain things
WorldofWarcraft.com -> Info -> Classes -> Paladin -> Talent Calculator
for the protection if you take aggro (which you shouldnt but somtimes you do) you need to not take any damage so toughness is good for increased armor.
BoK is really good because there are many classes that beg for BoK and there usually isnt a tankadin in the raid (atleast on my server)
and guardians favor every now and then a clothie (squishy) will take aggro you need the reduced CD on that because they may take aggro many times during a fight.
well thats my quick little guide, give me some feedback tell me if im missing somethin ext. thank you