So you said not to use the project Blynk because it was out of date so I went to the Home automation book and found this project to attempt to learn how to read temperature and humidity. Seems just about every project I try here has issues, probably some of mine but when you  cut and paste and still get problems it makes it very difficult to go on . In the code below you will see bold text that have issues. Trying desperately here to learn something but so far nothing but problems. I am starting to feel like this is just over my head, been able to do some programming with Arduino UNO , small things but this so far has been frustrating. Thanks

#include “DHT.h”
#define DHTPIN 4 // Digital pin connected to the DHT sensor
// Uncomment whatever type you’re using!
#define DHTTYPE DHT11 // DHT 11
//#define DHTTYPE DHT22 // DHT 22 (AM2302), AM2321
//#define DHTTYPE DHT21 // DHT 21 (AM2301)
// Connect pin 1 (on the left) of the sensor to +5V
// NOTE: If using a board with 3.3V logic like an Arduino Due connect
//pin 1
// to 3.3V instead of 5V!
// Connect pin 2 of the sensor to whatever your DHTPIN is
// Connect pin 4 (on the right) of the sensor to GROUND
// Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the
//sensor

DHT dht(DHTPIN, DHTTYPE);
void setup() {
Serial.begin(9600);
Serial.println(F(“DHTxx test!”));
dht.begin();
}
void loop() {
// Wait a few seconds between measurements.
delay(2000);
float h = dht.readHumidity();
// Read temperature as Celsius (the default)
float t = dht.readTemperature();
// Read temperature as Fahrenheit (isFahrenheit = true)float f = dht.readTemperature(true);
// Check if any reads failed and exit early (to try again).
if (isnan(h) || isnan(t) || isnan(f)) { // F IS NOT DEFINED
Serial.println(F(“Failed to read from DHT sensor!”));
return;
}
// Compute heat index in Fahrenheit (the default)
float hif = dht.computeHeatIndex(f, h); // AGAIN F IS NOT DEFINED
// Compute heat index in Celsius (isFahreheit = false)
//float hic = dht.computeHeatIndex(t, h, false);
Serial.print(F(“Humidity: “)); // SERIAL NOT NAME A TYPE
Serial.print(h); // SERIAL NOT NAME A TYPE
Serial.print(F(“% Temperature: “)); // SERIAL NOT NAME A TYPE
Serial.print(t); // SERIAL NOT NAME A TYPE
Serial.print(F(“°C “)); // SERIAL NOT NAME A TYPE
Serial.print(f); // Serial does not name a type
Serial.print(F(“°F Heat index: “)); // SERIAL NOT NAME A TYPE
Serial.print(hic); // SERIAL NOT NAME A TYPE
Serial.print(F(“°C “)); // SERIAL NOT NAME A TYPE
Serial.print(hif); // SERIAL NOT NAME A TYPE
Serial.println(F(“°F”)); // SERIAL NOT NAME A TYPE
}