Watch Scott Manley's video on youtube about how to get to the Mun/Minmus then make that rocket but put mystery goo and a material bay on it. put the decoupler for your re-entry stage below the goo and the materials bay, then put landing gear on the bottom of the bay. extending the gear before you land on Kerbin will keep your craft from blowing up when landing with all that weight on it. Then don't land on a moon and don't go all the way to Minmus. Just to a few fly-by's around the Mun and back and every time expose the goo and the material bay and to a crew report or 2 and an EVA report. That got me about 200+ Science. When you are getting good at this strategy try to go for landing on the Mun. But be careful!!!!! Any TINY mistake will OBLITERATE you! This was very affective for me, I hope it helps you get a huge boost in your Campaign. Then do Minmus, and when you think you're ready, going to another planet will definitely get you 1000/2000+ science.