Best way to get resources is to join a top guild which does at least all the basic tasks. And that also is in one of the two top brackets in the Guild Wars. You better play this game quite a bit to be able to join a good guild, as often the requirement is high. If you are a newer player you should start out doing tons of Treasure Hunts, can get maps by using Tyri in battles that also is a free reward when finishing the Zhul’Kari quest-line.