Hi there everyone So I am relatively new to Kerbal and i have really been enjoying it however... I am finding it very difficult to get anywhere space wise without either mainsails and/or orange fuel tanks. To my understanding this is because of my incompetence in planning & designing vessels that are efficient with fuel but actually work . Due to this, I have only be able to travel to and land on the Mun , and even that was a challenge! I really want to get better on designing rockets thus meaning that I can travel to other celestial bodies in the Kerbol universe, so I was wondering if perhaps any of you lovely people have any tips on how i can design rockets and manage fuel in said rockets. Or if anyone can further diagnose my issue that would be great. Any help would be really really appreciated thanks