Intro to Raspberry Pi Pico and RP2040 – MicroPython Part 1: Blink – Digi-Key 2021apr12
https://www.youtube.com/watch?v=JCk9QaCH5QU

Intro to Raspberry Pi Pico and RP2040 – MicroPython Part 2: I2C Sensor – Digi-Key 2021apr19
https://www.youtube.com/watch?v=b4KdzsAz6kE

Intro to Raspberry Pi Pico and RP2040 – MicroPython Part 3: PIO – Digi-Key – 2021apr26
https://www.youtube.com/watch?v=PrMQpv9iCFw

Using I2C devices with Raspberry PI Pico and MicroPython – Pepe80, 2021apr
https://peppe8o.com/using-i2c-devices-with-raspberry-pi-pico-and-micropython/

Trying Raspberry Pi Pico with I2C devices using (AdaFruit) Circuit Python – RpiConnect 2021apr
https://www.raspberryconnect.com/projects/41-tutorials-and-guides-1/190-trying-raspberry-pi-pico-with-i2c-devices-with-python