You get 5 daily tasks per day, one per difficulty tier from Novice up to Grandmaster. Tasks reset at 00:00 UTC and each completed task awards 1 credit. Progress is tracked automatically as you play (kills, skilling actions, and so on), wherever you play: monsters you kill in the open world and bosses and raids you clear with a group all count, and progress made in one place adds to progress made in the other. Daily tasks are available on cloud accounts.