ESP32 Arduino IDE

Mastering ESP32 Part 2: a laptop showing Boards Manager beside an ESP32 development board and the title Install ESP32 in Arduino IDE
Mastering ESP32 Part 2: Installing and Configuring ESP32 Support in Arduino IDE
DIY Electronics ESP32
Add Espressif's stable board index, install the esp32 core, choose the right board entry, and upload your first sketch to a classic ESP32 DevKit in Arduino IDE 2.