Device info https://datasheets.raspberrypi.com/pico/pico-datasheet.pdf
Simple example https://how2electronics.com/capacitive-soil-moisture-sensor-with-raspberry-pi-pico/
Advanced example https://www.instructables.com/Soil-Moisture-Sensing-With-the-Maker-Pi-Pico/
Manage display https://peppe8o.com/ssd1306-i2c-oled-raspberry-pi-pico-micropython/