This book helps you to create a "Google Firebase" database, structure it for your IOT application, perform all downloads necessary to install the tools (all free), configure them, know how to implement your Arduino ESP8266 12E with programming codes for sending and receiving data from Firebase. Finally, it will construct a Dashboard (control panel) for monitoring and actuation of the data to control its Arduino, at first only variables, after the change of variables by sensors and LED's, etc.