Steps after modeling

Hey guys,

as far as I dont hear anything from my teammate but I want to go on with our projects after a long time of exams I need some help.

I modelled nearly all objects from the airport. Got also some experiences on mapping simple objects, but I dont have any clue, what steps needed after modeling exactly. Can anyone can give me these steps and got some tutorials or other things how to texture (with all effects), how to bake/render and how to place things in the exact position insim?

Maybe I forgot something.
Any help is welcomed. Really want to go on, but dont really know in blender.