Resources are the materials and supplies needed to develop a Kingdom.
Food is a resource that can be collected from Farms, obtained through raids, captured Farmlands, and bought in the shop. Its main use is to train and upgrade troops, to heal the units, and to upgrade Artilleries.
Gold is a resource that can be collected from Gold Mines, obtained through raids, captured gold mine lands, and can be bought in the shop. Its main use is to construct and upgrade buildings and Artilleries.