So, as we all have noticed by now, SSTOs have gotten kind of difficult in version 1.0. I think I have been relatively successful at creating them, so I decided to make this guide, hope it helps The part about the flight plan is also here in video form: Also, you can check this KerbalX hangar, where I've put all the successful SSTOs I've managed to create http://kerbalx.com/hangars/2183