Some links:

* links to some ESP32 libraries
  https://www.arduinolibraries.info/architectures/esp32
* the OLED library https://github.com/ThingPulse/esp8266-oled-ssd1306
* vague guide to the OLED library
  https://diyprojects.io/using-i2c-128x64-0-96-ssd1306-oled-display-arduino/
* the sensor library https://github.com/beegee-tokyo/DHTesp