To use this library you need an Arduino Ide environment and libraries and Arduino core for ESP8266 WiFi chip. If you don't know arduino, see here. Then you need to install this library and the ...

This project demonstrates interfacing LEDs with a push button using an ESP8266 (D1 R1) and controlling them through Bluetooth using the Blynk app. The LEDs are connected to pins D2, D3, D6, and D10, ...