Jauhharul wrote:please help me to connect ESP8266 to arduino IDE step by step
You can follow the ESP8266 - Arduino IDE Portable installation Guide.
It is a full, detailed, step-by-step, installation tutorial.
Related Video:
Available on Tindie: https://www.tindie.com/products/nEXT_EVO1/universal-ac-mains-dimmer-mpdmv41/