Hi Stuart @stareagle ,
It is really un-doable to update all Courses each time a new Blender version comes out, 3 to 4 times a year.Sorry for that. Some Courses, like Fundamentals, will get updates, but not for each new Blender version.
So the advice is to use the version that is used in the tutorial, util you are comfortable enough with Blender, that you can use just about any version no matter what is used in the tutorial.
That being said, I think only 1 Shader Node (the Principled BSDF) has changed since the making of this tutorial; certainly not all the Shaders
