https://help.sketchup.com/en/sketchup-web/creating-and-editing-models

R - Rectangle
L - Line
C - Circle
M - Move
P - Push/pull
S - Scale
Q - Rotate


Major Help Resource
  https://help.sketchup.com/en/sketchup-web/creating-and-editing-models


Video Tutorials
  https://www.youtube.com/watch?v=ClNfoHVYCzY

Multiple Copies :
  https://help.sketchup.com/en/sketchup/copying-what-youve-already-drawn