gw gold is helpful for you to kill the Guild Lord and win the game. I will give you the way to play the game, and I hope you will like it.
There are a lot of ways to play the game, but there is only one way to win it: kill their guild lord. This is not to say you should gun directly for the lord at 2:00 into the game. That is called a full team wipe. Think of the game as a round of Chess. To force the opponent king into a checkmate, you first have to work your way to him, through position, material, and time. In Guild Wars, these goals can be analogously translated to playing for position, playing for morale, and playing for Victory or Death! These goals are not mutually exclusive and good play means keeping all three in mind through the entire span of the game. There is certainly trade-offs and prioritizing involved, where one goal is pursued at the expense of another, but none can be fully ignored.
Playing for position means a lot of things. It mean pushing into the enemy side of the flagstand when your flag runner is running towards your stand, it means falling towards your NPCs when your monks are low on energy and need some pressure relieved, it means putting down a ward vs. foes at a strategic location, it means in position to access their catapult when Victory or Death rolls near, and a host of other things. Knowing when to push, when to fall, when to collapse, when to split, and when to hold is vital to playing well.