1st reach level 6
2nd reach level 12
3rd reach level 20
The first quest is very easy, but you will need 2 weeks (give or take) to complete the 3 quest. It is not that complicate, despite earning money is quite hard.
-Wheat is cheap and fast growing. Plant and sell as much as you can.
-Build a kitchen As soon as possible, pet chicken for the eggs and cook them on the kitchen.
-Rabbits and juice are not worthy.
-The missions will help you leveling up very fast.