Every race now has one main resource and might have 1 secondary resource. We will speak more about resources below. This is an obvious resource from WarCraft 2. Gold will be used to train units and construct buildings. Humans may also use mana now that the elves have become powerful with their wisdom of magic.
Nothing is for sure sinse all races are still under developement.
Humans will still keep pheasants to mine their resources. Although resource management is still important, it will be something less time is spent on. Now that Blizzard has added RP elements, players need to search through the map for neutral towns that may be of importance. They do not have many complicated names. Most of them a second grader could recognize.