Error

[Barry Fitzgerald]

Good day,"

I purchased a book for my son and followed the directions to a T. (Coding Games in Python)
Whenever I got to the point of of moving the "hello" file over to pgzrun is where my trouble began.
Its not finding a path because I'm getting this "pgzrun is not recognized as an internal or external command".

I've uninstall reinstall and tried to trouble shoot offline.  I' believe its a "path" issue but that is a little over my head.  At least this is what I've read.  Yes I selected all users and the variables options on custom install.

Any Suggestions?