I'm pleased and gratified to see that award-winning science fiction author N. K. Jemisin has been tapped to present a Masterclass course in writing science fiction. Everything I know about Jemisin suggests that she is an excellent choice as an instructor, with a writing technique that combines superb creativity with rigorous research and consistency.
Sadly, though, I don't think I'll sign up. It would be interesting, but ultimately I feel that the ship has sailed for me in terms of a possible writing career. On the other hand, I did take that Chris Hadfield course in being an astronaut, so obviously practicality isn't the only consideration for things like this.