Arduino Uno HELP

hola amigos,
necesito su ayuda en un proyecto ya que soy nuevo programando. Gracias
necesito: Un programa que contenga un sensor de temperatura LM35, si hacen mas de 20 grados se encienda el motor paso a paso, en cambio si hacen menos de 20 grados se encienda un led.
POR FAVOR!! NECESITO SU AYUDA!!
GRACIAS

Hello friends,
I need your help on a project since I'm new programming.
Thank you I need:A program containing an LM35 temperature sensor, if they make more than 20 degrees turns the stepper motor, instead if they make less than 20 degrees an led lights up.
Please!! I NEED YOUR HELP!
Thank you

What have you tried so far ?

Can you read the temperature from the LM35 and display it in the Serial monitor ?
Can you make the stepper turn and stop ?
Can you turn the LED on and off ?