On electronic music: there is already a range of careers, some of which are not so obvious.
At the most conventional, and well-established, end of the range, there is the whole category of music production and engineering (live and studio) in the ordinary sense of music.
Then there are all the people who do sound design for other media: film, video games, apps, etc. This includes musical elements and foley.
Some individuals are actually making a living in part or in whole by designing and selling ringtones.
If he is interested in careers in these areas, he may enjoy browsing some of the industry publications, like Mix magazine or Electronic Musician.
