Scouting is a great way to get more resources, so take a look on the world map and check for resource stashes. Recruit scouts and click on the stash on the world map to dispatch the scouts there and snag the goods before someone else does! You can also research the production rate of goods, the higher the research level, the faster all of your villages will produce them. Of course, the fastest way to get more resources is to play cards strategically. Certain cards will instantly give you goods, while other cards will increase the production rate of goods. Additionally, you could play a card which boosts the production of all types of food or all types of building materials, thus stacking the bonuses of the two cards!