Once you have learned to connect your EV3 to the computer using BLUETOOTH and www.scratchx.org then you may begin programming your EV3.
Challenge 1
Get the EV3 to play a sound.
Challenge 2
Get the EV3 to play a simple song (Happy Birthday, Twinkle Twinkle Little Start) etc.
Challenge 3
Create a button that when click the song programmed is played automatically.
Challenge 4
Create keyboard button that when pressed will play the song you programmed.