It's sad that there are so many people that play this game so much, yet still don't really understand what differs them from those who play on 2500+ arena or rbg rating. Many firmly believe that those who play on high rating are special or just smarter than the rest, when that's not really the case.. sure, they're not fools, but it doesn't take more than average intelligence to actually reach those ratings. You just have to know how to play, simply put. You have to know where to begin, how to practice and then how to master. Everything has to come together nicely, and you can't really afford mistakes on high ratings. So you take all the factors of PvP and you learn how to use them as best as you can, but where do you begin? A guide called The Gladiator Guide by Jonathan Miller, a multi gladiator and player of WoW PvP for more than 8 years, is one way to start. It will teach you what all these factors are, how to practice and eventually master them, which is really all it takes to become an awesome PvPer.
The details, such as the strategies, come with being a good player and understanding the PvP aspect of the game and being able to use ingame mechanics to your advantage better than your opponent. You'll be able to come up with all sorts of different strategies, and plenty of light-bulbs will go off in your head and you'll say to yourself "We can actually do this and that to win", and voilá, you have a strategy.
Source White Market