I took the Screenwriting Unchained-course as a live course at the Swedish Film Institute a few years ago. It was a great (and intense 3-day) experience. Not to say a revelation. After the Hero’s Journey, Truby and McKee with 9, 12 or 20-whatever steps (not bad at all and very useful – but still) it was very liberating.
The TV Series-course takes the same thoughts and applies them on ideas and stories (and storylines) that are meant to last for a whole season (or in some cases several seasons). So far I haven’t come across a take on story structure that has been as helpful and useful as this one. (Ok, Aristotle, but that’s where we all start.)