There is an excellent tutorial about the Surveyor probe. It was really useful to understand the basics of C++ & Orbiter's instructions. The most difficult was to set-up the compiler ! After that, that's a lot of work. I've just began to learn, my first try was a "realistic-lunar shuttle PB" with skids, small SRBs that could not be stopped once ignited (with a key to activate them), no hovers, it was just a modification of the basic PB. It learned me a lot, but it was a very useless ship, I searched but I couldn't find it any use lol.
Now I'm working on a multistage Delta-IV rocket, basically it works but programming a working and flexible launch guidance program is especially challenging. I also still have to learn how to connect my modules with OrbiterSound & how saving the state of the rocket in a scenario file... That's a lot of work !
But it's really fun :lol: