What is the difference between "Name" and "Display Name" ? Where do I put my business name?

In the My Account section of your dashboard, you have the ability to add a Display Name that is different than your personal name. When you designate a Display Name, this will replace your first and last name on your Instructor Page. You can use a Display Name if you'd like to portray your account under your Business Name.

Both your personal name and your Display Name will be used to populate instructor search results.