Yoga Trainers: How do you sell tickets (or Promote) your Yoga classes Online?

There are many popular yoga trainers who use Buy Me a Coffee to sell tickets to yoga classes online. I had also seen some of best Facebook pages or groups for Yoga Trainers, where they built a fitness cult like audience and monetise their yoga teachings. Some choose to promote via Zoom Live classes or Facebook or social media.

I want to know if there is any good readings on that teaching Yoga online and monetising them? Perhaps even a course to allow a new yoga trainer to do so?