The first time I showed my older brother KSP he immediately refused any help and wanted to learn on his own. He already knew a bit from watching me play on my own computer, so he made a small rocket on his own. Trouble is, he forgot a parachute and watched with horror as his capsule was approaching the ground fast, and exploded . I then taught him a bit more and he starting getting into orbit with the Kerbal X, but he doesn't really play it.