Hello!
I've recently joined the ksp community and I hope to be an active user from now on. So far, I've playing ksp for a few months, so I know a few things of orbital mechanics etc, the furthest planet i've reached is Eelo, so I'm not a noob, however, I'd like to learn more about ksp and become better, i was wondering, is there any guide, manual, pdf about ksp that can teach me new things? Thank you