PvP Basics Guides

Here are some general hints on playing hardcore PvP. Note that some of these hints apply only to playing on a dedicated PvP server (see below) but most can be applied to playing PvP on normal servers as well.

Win the battle before it starts - With the exception of Rogues, Warlock pets, and players laying an ambush you can see most threats coming. Knowing when (and where) to run is more than half the battle.
There's safety in numbers. When travelling, round up a crew of faction friends despite their levels (typing /anon will hide your level from other players) and stick together.
Stay out of the open, stay on the move, and stay alert; especially when you're fighting NPC mobs.
Casters and hunters need line of sight to execute their most powerful attacks. Grab some cover whenever possible, but don't get yourself backed into a corner.
Do what you do best, but do it big & fast - If you're specialty is damage, set up your talents to do lots of damage quickly (casters should concentrate on direct damage spells rather than damage over time spells, for example). If you're a healer, heal big and buff big; worry less about mana consumption than being able to heal a few players fast and give them a better chance to resist mind-control spells.
Most battles are less about winning than making your opponent lose. For example, snare a hunter's pet and close on him or her fast to minimize the hunter's ranged attack advantage. Silence/stifle/pummel a warlock so that they can't DoT and fear you. Root or snare a warrior to stay clear of their powerful melee attacks. Find a way to survive a rogue's initial barrage, mark them, and you should be in good shape to turn the tables.