The model is simple: build a product once, then sell it again and again using content that brings people to you.

There are four parts, and every module in this course strengthens one of them:

Product: something digital that solves one problem. A guide, template, tracker, web app or mini-course. No stock, no shipping, very high margins.
Audience: people who follow you because your content helps or entertains them.
Funnel: the path from stranger to buyer. Free thing, then a cheap product, then a bigger one.
Traffic: how people find you. Free (short videos, posts) and paid (ads).

Simple maths: a $19 product selling 5 times a day is about $95 a day, or roughly $2,800 a month before fees. That's 5 buyers out of the thousands of people who can see your content every day.

Most people fail because they work on only one part. They make a great product with no audience, or grow an audience with nothing to sell. You will build all four.