1. Plastic:
  2. Paint:
  3. Electricity:
  4. Metal:
  5. Gold:
  6. You can occupy an unoccupied resource spot to gather resources, or seize one occupied by another player to continue gathering.
  7. Resource gathering speed and amount depend on your HQ level, troop load, technology, hero skill, etc.
  8. Higher level resource spot contains more resources than lower level ones. Your gathering troop automatically returns to your Command Center either when they can't carry more resources or when the resource spot is depleted.