PvP is a very different game than PvE, and you'll need to radically alter the way you play if the battlegrounds are your very first contact with PvP.  This section is not about teaching you how to play PvP but just a list of a few battleground-specific thoughts that you might find useful. world of warcraft gold

I'll start this section with a few general comments and then more specific ones depending on which class you are.  I'm hoping to receive some help from the community to fill this section since even though I have three 60 characters, my Rogue is the only one I've ever PvP'ed with.

The first thing you need to realize is that you will rarely be dealing deadly blows.  That's right:  very rarely.  You'll land a few hits on someone, but you won't be the first one to hit them and you won't be the one finishing them off.  Therefore, all the crit and combo abilities you have in store need to be revised in light of what battlegrounds really represent:  teamwork.

For this reason, I tend to focus a lot more on crippling and immobilizing enemies than killing them (I rely on my heavily equipped teammates to do that).  DOT's are also a good weapon to use since a lot of human players will know when to run away to heal (especially paladins, which have the ability to "bubble up" when they reach 1% health and then heal themselves), but they will typically not know exactly the amount of DOT they have just received until it's too late.

Rogues

Mind-Numbing and Crippling poisons are a must.  Forget all the other damage-dealing poisons that you probably use in PvE.  In the battlegrounds, you want your enemies to walk very slowly, receive massive DOTs, have their casting time reduced and, last, receive less healing (healing is difficult in the battlegrounds).  I also use a lot of Kidney Shot to immobilize someone, and Rupture, which is a great DOT to inflict especially with five combo points.

As a general tactic, Rogues should never engage plate and mail and should stick to cloth only.  Based on what I said above, you will never be able to kill any of these players, but you can incapacitate them quite a bit by sneaking behind enemy lines and either sap them if they are not in combat yet (ideally when they just resurrected or are drinking or eating).  If they are in combat, a Cheap Shot, followed by a Back Stab and maybe one Sinister Strike are a good way to make their life a bit harder.  Depending on your build, you will have accumulated three or four combo points by then and it's then time to run away back to your team and spend your capital on Slice and Dice to make sure you don't lose these points (again:  you will not be killing your target,wow gold so the combo points will disappear soon).  Sapping priests or druids is particularly effective since you are basically putting out of commission a major healer for thirty to forty seconds.  Sapping lonely flag takers is also a good option if you know that help is on the way and you don't feel like soloing that particular player.