You will work on it. First of all you will need to sow the field. Before that, sitting behind the wheel of a tractor, you will hook up to it a special plow. After that you will need to get to the field and plow it. Uncoupling the plow, you attach the seed drill with which you plant crops. At this time you can go to the farm with the animals and feed them. After harvesting, you will sell it and earn money.