Actually the transition is easy if you totally forget the Windows version altogether.

There are many good online resources to help with the transition, here are a few:
https://www.youtube.com/watch?v=wHqf9n4hhYM
https://www.lynda.com/AutoCAD-for-Mac-training-tutorials/1922-0.html
https://knowledge.autodesk.com/support/autocad-lt-for-mac/learn-explore/caas/CloudHelp/cloudhelp/ENU...