Tap the "Helicopter" button and look at the orders. Try to get the items that the people require to earn coins. Only choose orders that are worth the effort.
Plant lots of crops to build your city. Wheat is always extremely important; keep it in good supply and always plant more. When you have many available crops refer to the orders that you have in the queue and food required for animals and plant accordingly.
Storage space is limited. Construction materials are obtained by train, but you do not have control over what materials that you will receive. Keep sending trains in and out until you get the desired materials.
