What resources do map tiles give in Game of Thrones: Dragonfire?

Resource tiles are your farming spots. There are four kinds, one per basic resource:

• Wood (building).
• Stone (building).
• Iron (military gear and elite troops).
• Food (keeping your armies fed).

Every tile has a level (1 to 13+ depending on the region): the higher the level, the more it holds, and the harder it's defended. You send an army onto it, it beats the defender or defenders, then harvests over time.

Advice: farm the resource that's actually blocking you right now — usually Stone or Iron while you're pushing your Stronghold — and stay at levels your army clears without losses. No point aiming high if you leave half your troops there.