Training: i made a tutorial some time ago, when I was preparing for OMX, the follow up of OMP:
https://www.orbiter-forum.com/threa...-in-1h30-a-1g-tutorial-and-a-challenge.40076/
(actually it's more difficult to reach the ISS, staying in Earth orbit, than departing to a distant body, like Moon...)
https://www.orbiter-forum.com/threa...-in-1h30-a-1g-tutorial-and-a-challenge.40076/
(actually it's more difficult to reach the ISS, staying in Earth orbit, than departing to a distant body, like Moon...)