How to install Library of 8266 in Arduino IDE

 

Step 1: Open Arduino IDE

Open ArduinoIDE, 

Open file 

 

Goto- the preferencesand then click Preferences and then paste http://arduino.esp8266.com/stable/package_esp8266com_index.json

in the Additional Boards Manager URLs option, click ok.

go to Tools menu

                                      

got to board - Board Manager