We'd recommend 6-8 key points
This will be displayed on your sales page. We'd recommend 4-6 types of people with your target audience.
For example: "Individuals who are interested in self-development and personal growth", "People who run businesses, or employees who are overwhelmed and stressed", "People who need to take a step back from work and find their place of strength."
These could be the key modules of your course, or the key sections of your training programme. This is displayed on the sales page to give users an overview of what to expect. It doesn't have to be exactly the same as your course structure.