The best and most fun way to quickly level up is by simply playing a lot!
Every action you take will give Experience Points (abbreviated as XP)! The more XP you have, the more machines, animals and items you will have at your disposal - making you a better farmer as you progress in the game!
So, keep harvesting those crops, producing those goods and sending those orders! Within no time, you’ll be the greatest Overlord that’s ever roamed!