The advert for the course Foundation to CNC programming with G-Code
That can be found here:
https://gcodetutor.com/gcode-tutorial...

The foundation course is the first course in the professional G-Code programming series. During these online video lessons, we will cover how each GCode and MCode command works in depth. Then we write a short program using the GCodes so you can learn how it works within a program

Aimed at beginners in the world of CNC programming with no previous G-Code programming knowledge required.