Fastest Solo Priest Leveling Guide
guide for fast priest leveling from level 1-60.

Beginner's Guide To Healing
Basic tips any Priest should know about instancing

How I Leveled My Shadow Priest To 60
Level-by-level zone-by-zone mob-by-mob guide on the best spots to grind. Useful info

Tarana's Guide To All The Nagging Questions
This will answer a lot of your questions about Priests. More importantly, see Post #2 in that thread, entitled "Huzzah's Guide To Not Posting Your Inane Crap". It was a beautiful guide that was a little too offensive to get stickied, but we finally managed to get it in one.

The shadowpriest leveling guide
Getting a priest to level 60 as fast as possible. This guide covers talent builds and progression, equipment choices, fight strategies and grinding areas.

The Complete Priest FAQ
Hi numerous questions about talents, spells, builds and mods are always asked on the priest forum. There are large amounts of helpful posts by priests and kudos goes out to each and every one of them, hopefully this guide will answer most the FAQ on priests. (All spells that are above level 60 are TBC only).

Mind Control Guide
Mind control is obtainable at level 30 by priests, and can be used to crowd control, use an enemies' abilities against them, and lots of other creative stuff that are towards the end of this FAQ.

PvE Priest Handbook
Guide for one who wants to make a PvE Priest.

Priest Talents
List of talents tree built for spec.

The Priest Mana Regeneration Model
Show on how mana regeneration of a priest work. Might help if you want to be healer in major raid or fight.

Other:

Priest Addon
List of addon/mod for priest leveling, pvp, pve and tradeskill.

I will update this post if there is any changes.