You’ve got excellent live documentation of all sorts: your YouTubes; your "your topic is similar to…; ", and the drawing tips sidebar that I dismissed and can’t find again, etc.
However there are things I’d like to check out just to reference them directly (so that I don’t have to remember…now what video was that in?)
to compare SketchIUp to other CAD programs I’ve been exposed to with features like (multiple) viewports; (multiple) User Coordinate Systems; etc.
Is there a document (.pdf?) that explains SketchUp’s functionality or a url that is purely documentation?