Well in the beginning it's really depends on your gear. When you hit level 60 and start doing battlegrounds, people will often just one shot you because of the gear differences.
You'll end up at a decent amount of gold after you ding max level, so you can just buy the basic battleground set called Victor's.
Then you can almost survive the bg, and farm the next set, what is the Fraywind. After you got all the required pieces, you should enchant them up to +9, in the meantime buy the jewelry from the bg credit.
When you got all your jewelry and fraywind +9 equipment, this skill comes in the sight when participating on the battlegrounds.
Also when you ding 60 you should search a guild and attend the daily nexus events and boost your Agnitor reputation to the max (revered) to buy the t14 agnitor gear from the vendor from agnitor credit you earn doing nexuses.
From both nexus and fraywind pieces together, you can craft the t14 conjuct gear, what is a pvepvp set, and you should begin masterwork it. (instead of +9. item with masterwork on it can go up to +12 with bonuses)
Do some google search about how nexus, and masterworking works.
Also there is a lot more to do, not to mention other reputations what give you gold and enchanting materials for t14 gear later.