Holy crap. I love this game, although it equally fascinates and infuriates me. I just mastered (ha. ha. mastered. right.) getting something into orbit and have my first unmanned satellite boopin' around at ~100 km above Kerbal. The next phase: a manned orbital + return mission, an unmanned lander probe to Mun, and then--well, that's classified.
Also, I wasn't really sure what forum to put this into. It's rocket construction, so... simulation? mods, move this if you feel it is necessary