I'm in a similar position to Sumghai, in that I'm most familiar with parametric modeling and have built a model I'm fairly happy with in FreeCad, but it's not really suitable for details like windows and doesn't do textures at all. I find Blender absolutely bewildering, though; it seems way too complicated for even fairly simple shapes.
Are there any other (free) programs that are similar to parametric modelers where I can slap in some dimensions into a sketch and rotate/extrude it, then cut in details? Just as an example, in FreeCAD I could create an profile of a saucer section, then rotate it to create an object.