Please is missing XD

I'm a python programmer friend that is gone in 3d printing, and I showed the new blender and scripting tab that comes with it.

In my dumbness of just graphical artist (the user) I select things with the mouse . Can someone make a 30 seconds video of how select and deselect stuff by python code, like vertexes and edges. Because the act of doing it does not get an event on the console .

Also, side mission: anyone knows how to explain some someone that uses Cads what is good geometry (quads) XD