Make a channel on YouTube, record a base material, spreading free. If people like it, no problem, here's access to the paid content + consultation via Skype + webinars. PR in social networks + connecting "word of mouth".
Can do a little promotion in schools: teach for free, but on the condition that it will work for N months (possible with extra charge).
At the expense of "some skill in programming" - usually specialists so do not tell)). I sincerely hope that you are not a victim of the effect of Dannika-Kruger