Hi Edward, I took several MOOCs, and in some cases, I even downloaded the lecture videos for offline learning at my own pace.

It's hard to pick a favorite, as I learned something from all of them.

A compiled some of those courses into an article (link below).

https://bettermarketing.pub/9-free-writing-courses-that-can-make-you-an-unbelievably-better-writer-1c1c04d1fd5b

Here's another link to more some more, call it a sequel, as access to some of those on the first list may have expired.

https://bettermarketing.pub/10-top-writing-courses-that-can-transform-you-from-a-beginner-to-a-brilliant-writer-3ca0189cb681

With the rules, I still follow parallel structure, climax, rule of three, concreteness, among countless others. Hope I answered your question.

Cheers.

Boateng.