Your final goal is to cut the giant beanstalk, but it's too strong and you will need very much energy. Start by collecting resources to become stronger and collect more and more stars to buy different upgrades. Fish in the lake to get different kind of fishes and eat them to get energy. Mine on for the rock and other materials and sell them to get stars. You can hire people who will help you in different things. Become as stronger and as rich as you can and finally cut the beanstalk.