Learning electronics not only can be fan but it's actually quite easy. I used to be one of those thinking I would never be able to do "this" or "that" but at the end it just took me one afternoon and some motivation to understand the basics.
The main purpose of this project is that anybody with less than 10 USD / 8.5 EUR can start to play with Arduino.
For this particular project I used and Arduino Nano, but you could also use an Arduino UNO which is more common and shares the same pinout.
Today my flatmate was looking a bit sad, so I looked on the internet for the necessary code in order to play the Super Mario theme melody and showed it to her. I think it worked since she was smiling.
Find below a video of the final testing before taking the Arduino to her and asking her to turn it on. If you are patient enough, you will find out why is it so difficult to play with electronics at my place:
The code was taken from here: http://www.linuxcircle.com/2013/03/31/playing-mario-bros-tune-with-arduino-and-piezo-buzzer/
Find below the schematics:
As always, do not hesitate to come back to me in case of any doubts or questions! :)