I understand you're looking for guidance on SketchUp version 18.0.0. However, I need to provide some important clarifications first:
Would you like the official download link for SketchUp Make 2017 or help accessing SketchUp Free? sketchup version 18.0.0 free download
Would you like the official download link for SketchUp Make 2017 or help accessing SketchUp Free?