I just gave this talk to the Toronto Raspberry Pi Meetup group: Getting Started with MicroPython on the Raspberry Pi Pico. Slides are here:
or, if you must, pptx:
PDF, for the impatient:
If I were to do this again, I’d drop the messy thermistor code as an example and use a DS18x20, like here: Raspberry Pi Pico: DS18x20 in MicroPython
also, simple potentiometer demo I wrote during the talk: potentiometer.py