if someone wants to better themselves with new skills, tv is imo not the place to do that.
first of all, what do you select to teach, is it the positions that seem to be most available, or some other criteria?, and what's that sound like to an employer "o, yea i watched those training shows for programming, so i should be able to do something". most likely anything worth teaching would probably require several episodes at the very least(depending on the complexity of the skill being taught, this could takes weeks depending on both the length of the show, and number of times it is shown).
secondly, not everyone can learn so easily by watching, nor do all skills translate well to being taught through only showing, your just blanketing information to people, and hoping they understand what your talking about.
and lastly(and most importantly to any broadcasting company), what's in it for them?, would you riddle these training shows with advertisments to cover the costs of not only broadcasting, but also to bring in experts in the field's that you want to teach? and at the end of the day, is their even a market of people who would be willing to tune in?
if someone truly wants to gain a new skill, their are plenty of better resources(such as the internet), that can more thoroughly delve into information on a particular topic, than a television broadcast could ever hope to do.
edit: also, i find your story very hard to believe that someone with absolutely zero technical know how, was able to read some articles and in 30 minutes, program an entire picture viewer, which covers loading images, searching for images, decoding images, and displaying them through the graphics api. all in 30 minutes, she must be quite the genius.