Are there any programming courses on online learning platforms?

[ghost]

I believe most of you are familiar with learning platforms (a website that sells online courses, like Udemy and others).
It would be great if one day I could find a course teaching how to make a plugin or a theme for Yellow... a tutorial made by the developers who created the Yellow CMS, for non-programmers, like me... (I see myself more as a curious and not so experienced webdesigner...).