A simple Arduino example of connecting an ESP32 to WIFI and requesting (HTTP GET) a page from the internet.

ESP32_HelloWorld.ino

#include <WiFi.h>
#include <HTTPClient.h>

const String ssid     = "PUT_YOUR_WIFI_NAME_HERE";
const String password = "PUT_YOUR_WIFI_PASS_HERE";

HTTPClient http;
String url             = "http://sparks.gogo.co.nz/esp32/hello.html";

void setup() {
  Serial.begin(115200);

  Serial.print("Connecting to wifi " + ssid + "...");
  WiFi.begin(ssid.c_str(), password.c_str());
  while (WiFi.status() != WL_CONNECTED) 
  {
    delay(500);
  }
  Serial.print("OK\n\n");

  
  Serial.print("ESP32 IP Address: ");
    Serial.print(  WiFi.localIP() );
  Serial.print("\n\n");
  
  delay(2000);
}

void loop() {
  do
  {
    Serial.print("\nFetching " + url + "... ");

    http.begin(url);
    int httpResponseCode = http.GET();
    
    // 200 is a normal response code
    if (httpResponseCode == 200) 
    {    
      Serial.println("OK");
      Serial.println("\n--- BEGIN CONTENT ---");      
      String payload = http.getString();
      Serial.println(payload);
      Serial.println("--- END CONTENT ---");
    }
    
    // Otherwise (eg 404) treat as an error
    else 
    {
      Serial.print("Error code: ");
      Serial.println(httpResponseCode);
      Serial.println(":-(");
    }
    
    Serial.println("Repeats in 10 seconds...");
    delay(10000);
  } while(1);

}