This game is much more difficult that it seems. In the first phase, on a limited budget, you have to buy parts and use them carefully order to construct a rocket.
In the next phase, if your rocket has a good launch, you will be able to see how far it goes…Something that will depend on how much fuel you have put in the rocket.
Kerbal Space Program is a great game, but mastering it is not easy. At first it is frustrating and you need to work at it. Once it is mastered, the feeling is awesome.