In Arduino IDE go to Sketch -- Include Library -- Manage Libraries to open the Library manager. Then search for Blynk in the search box. Then click on Install to install the Blynk Library (Current version 1.0.0-beta.3). After that, you can access all the Blynk Edgent examples code for ESP8266 and ESP32 from File -- Examples -- Blynk -- Blynk.Edgent path. Or you can also visit the Blynk GitHub Page to download the latest Blynk Library and install it from Sketch -- Include Library -- Add .ZIP Library path in Arduino IDE.