https://www.arduino.cc/en/Reference/HomePage

• Log in on the Windows side
• Plug in your Arduino to the machine and make sure the training shield is on properly. Don’t bend the pins.
• Open up the Aceduino folder (link on the desktop) and run Arduino.
• Pull down the Tools menu and choose Board, ACEduino w/ ATMega328.
• You may need to change the COM port through the Tools, Serial Port menu item.
• Paste the following into the window and click the upload button…

// Pin 13 has an LED connected on most Arduino boards:
int pin = 13;

void setup() {
  // initialize the digital pin as an output.
  pinMode(pin, OUTPUT);
}

void loop() {
  digitalWrite(pin, HIGH); // set the LED on
  delay(1000); // wait for a second
  digitalWrite(pin, LOW); // set the LED off
  delay(1000); // wait for a second
}