Texturing for a spacecraft.. Moderate Knowledge of space travel needed

Hi there, I am making a 3d model of a large modular ship that would carry passengers and would travel between Earth and Titan, while making stops on the way. It has a centrifuge, a nuclear reactor, and an aerobraking expandable heatshield on the front. The actual MODEL is 99% done, but while I may be able to model, I cannot texture. I have “labeled” everything on the model via vertex groups, so you know where everything is. Try to make the textures 85% realistic, or more. I would also like a bump map. I will PM anybody who wants to do this with the .blend. Here are some screencaps in opengl: