I didn't know that I should be careful holding the Arduino board with a palm of my hand, which is conductive! I should get a piece of wood and secure the Arduino on top of it.
It wasn't hard to set up the breadboard, but it was definitely a challenge to code using Processing. After I uploaded my code onto the Arduino board, I was so excited to see the LED's light up / blink that I asked my friend to take pictures of it. I will share with you the picture here as soon as she sends them to me.