Ok so here’s the deal (very small font to fit a lot of words)
What you need to do is design a mun lander that can go to the mun and back to kerbin. (optional) You need to have the following:
”Terrier” engine
FT-400 fuel tank (OX and LF)
Mk1 command pod
Inline reaction wheel
Extra external fuel tanks
etc. you get the idea
You also need a rocket that can get into a 75,000 meter orbit around kerbin that carries the lander
The rest you can do on your own!
Thanks for reading!