This was a ton of fun to watch, though it's too bad you guys didn't make it into space. The main way of making it to the Mun is by first orbiting the Earth, then launching yourself to the Mun. If you try to just fly straight there, you're not going to have enough fuel for how heavy your craft will be. I'm no KSP aficionado by any means, but generally what I do is get into orbit height (36,000 M) and then turn off SAS for a moment so I can lean the craft forwards, just until it's perpendicular with Kerbin (so right on the line between the blue and orange on your compass). Then once you're in orbit and gone around Kerbin, thrust up so you leave your orbit and head for the Mun with a ton of speed.
