The game permits trading to be done: you can do this in 2 methods and each of them is easy to use. The most convenient way to find a particular resource is to go to the world map by tapping the Favilla button and tap the Goods icon to search for a particular one to get. You may not know precisely what you require, and this is why using the 2nd approach is usually much better and simpler. This needs you to tap the building that you wish to acquire the resource for and which you are doing not have. Tap the Plus icon next to it. You will be revealed a lot of alternatives for getting more of that specific item, and the bottom one is "Obtain from trade". Select it and enjoy your new products!