The number on the far right beside the person symbol is your population. You can use the plus or minus beneath the farm to put them on or off the farm. When they are on the farm, they produce food. The number in the middle beside the drumstick symbol is how much food you produce each turn. Each person needs one food, and if there is a warning sign, you aren't producing enough food, so you should add people to the farm. The percentage on the far left with the crossed swords symbol is the threat percentage. It is the chance you get attacked, so you want to keep it low. It will get a warning symbol when it is high. People who aren't working on the farm are guards and will lower that percentage. On your turn, add and subtract people from the farm and then click end turn. Excess food will increase your population. When you end the turn, there is a chance of attach (the threat percentage). If you get attacked, you will lose people.
attacks basically never happen now