This post is about how to add support for ESP32 to Arduino IDE and how to upload a sample Arduino sketch to NodeMCU-32S.
For info. on how to update an already installed Arduino-ESP32 support package, please visit http://wei48221.blogspot.tw/2018/04/arduino-esp32-how-to-update-to-latest.html.
Below is the NodeMCU-32S module used for this post.