At the beginning of the game, when you're in the tutorial with the monk, he will ask you for a code. Enter PUYNU and you will get 1000 free food and 200 extra food.
Quick start to parallel kingdom
Star of with collecting Wood, Berries, Leather, Stone and Iron. Sell it at a solid market and then buy a dead weapon. Go to a body of water and water hunt. You will build a massive skeleton army.