Like Kerbal Space Program? Then check out this book: Apollo. Or if you're more interested in the science behind spaceflight, you might like this: Fundamentals of Astrodynamics

KSP Parts

Title Package Author Cost Mass Crash Tolerance Drag Max Temp
SeptaLFE LV-T45x6 Liquid Fuel Engine Gabyalufix's quick and dirty miscellania Mrbrownce & Gabyalufix 950 15 30 0.2 36000