If you need to boost your experience points, you have an option available to you. By carefully swapping out coins for experience points you can quickly build up your levels, but it can be quite costly. Trying to use this method mostly for just finishing off increasing levels will help you to reduce the costs though.
To begin with, start by plowing a few fields. This will give you 1 experience point for each square plowed. Then plant soybeans for each plowed square. This will give you another 2 experience points. The total cost for each square is 30 coins, but the total experience points is 3, by deleting each field and repeating the process you can quickly see how you will significantly increase the amount of experience points you have.
If you have a ton of coins to use for the process, putting up buildings can be a much better way, but buildings are extremely expensive and could very well create some issues with trying to come up with the coins or even cash needed to use buildings which leaves soybeans as the next best alternative.
