to be honest: this tutorial is great from my stand point (Being a musician), but it's a lot easier to make music when you can play any instrument. I believe the best way to start off is by playing the piano, though getting a private teacher could cost a couple hundred or so.

Even Digitally you still need a base of minor and major scales. Even having an absolute pitch type of hearing it would be hard to pull something off without having some basis of music.