For the longest time, in speaking with others, I have heard over and over how Blender has a LOT of shortcut keys.
I LIKE them!
In the insetting example it almost felt like cheating to use nothing but the keys and build the Mayan Pyramid structure.
One thing, and this is just me, is that I find that I go back and do then redo then redo again some exercises just to reinforce the use of shortcuts. No such thing as too much practice.