Hello Ron, I hope you are doing well!
The “MicroPython Programming with ESP32 and ESP8266 eBook” is an eBook in PDF format, so in Unit 1 you can download the full eBook in PDF format for offline usage: https://rntlab.com/module-1/welcome-micropython-programming-with-esp32-and-esp8266/
The PDF eBook comes with everything that you need to complete each project inside.
I hope that helps. I apologize for the confusion. Thanks!