How do I farm resources from map tiles in Dragonfire?

On the world map you'll find neutral resource tiles your armies can harvest: Wood, Iron, Stone, Food, plus Ruins, graded by level (Lv. 1 to 13).

The principle: you send an army to a tile to harvest it over a march/collection time. The higher the tile's level, the bigger the yield (but usually further away and more contested).

A few good practices:

• Scout the area around your stronghold first (e.g. around Last Hearth, King's Landing)
• Go for nearby tiles to cut march time
• Match the resource type to what you're short of this Reign

The Swift Stride research (+3.5%/level march speed) speeds up your farming round trips. It's the main source of "free" resources on top of your building production.