I did this course from a few days ago after finding it in a comment. It seems reasonable good enough to get a good landing page up and running. Talking about your customer problems and how to solve them was a new thing to me although as a service business I have always talked about my experience and skills.

The other good addendum to this course is the stripe https://stripe.com/en-sg/atlas/guides/landing-page-copy

Thanks for sharing the link to strip.