Been following this fellow on Youtube. He does lots of Sketchup work and instruction. He recently started a series called "Square One" which covers the use of the basic Sketchup native tools. Each video is under 10 minutes and very informative- even if you've been using Sketchup for a while. I found it especially helpful for someone like me who is self-taught on Sketchup.
https://www.youtube.com/c/SketchUp/featured