An Introduction to SketchUp for Modeling Interiors
https://www.sketchup4architect.com/sketchup-for-interior-modeling.html
Professionals and amateurs alike agree that SketchUp is user friendly alternative to the more complex software usually used in architecture. It takes practice to learn everything SketchUp can do, just like with every other interior modeling software. Apply SketchUp from the Start When sketching rough ideas for an interior design, we recommend using SketchUp right at the beginning when modeling the interior design. You will use SketchUp anyway, so be sure to note down the measurements on the screen.