Sites like Coursera
, and Khan Academy
specialize in technology, science, and mathematics. I need similar resources but that teach writing skills (and English in general, I suppose, but mainly how to write well).
Free courses on expository writing, technical writing, grammar, how to build a sentence, how to edit, how to index, etc., would all be good.
Courses that require payment would not be good. Also, it isn't enough to get a syllabus, a few PowerPoint slides, and a list of Amazon links. I am hoping for real content (lectures, exercises, and tests) free and online like you might get on Coursera (but for writing, not for math and science).