Great question :)
You can earn by putting a course or a mock test fee attached to your courses or mock tests. Based on the number of learners purchasing the course or mock test, you will be generating your revenue. The revenue is deposited to your bank account as per the payment gateway of your choice. We would not take any commission on that.
How will the learners buy your course?
You will have to do the payment gateway integration.
Here is how it works: