Hey thanks.
Courses: decide upon a topic, build some personal demos/projects in it until I understand the pain points, write out a curriculum and make sure a course makes sense based on the curriculum.
Build all the exercise files, and then build the landing page for the course (since I can now understand exactly what we'll cover/learn about). Now, I'll get started on ~half the videos.
Maybe do a pre-sale announcement half way through, and finish off the remaining videos. Do the final course announcement since the course is ready at this point!
Keeping up date: I think it's about being relaxed even I don't know everything. I still haven't used React properly, even after all this time, but as fair as I can tell, it hasn't held me back from opportunities I'm interested in!