Resource gathering itself works like in the Age of Empires series. You train a group of peasants and right click on the forest for instance, to make them gather wood.
Every race has the access to unique renewable resources.
Humans for instance can breed herd animals and gather food on farms. Orcs can breed wild animals, but they have least access to renewable resources. Elves on the other hand have all resources renewable.
I'm sure you'll hear more of the Elves in the future.
Alexander Flegler aka "Alexastor"