It is very simple and straightforward process, just follow below steps to do it.
Step 1: Login in using your creator credentials.
Step 2: Go to the library section in the left menu.
Step 3: Click on “Create New” course button.
Step 4: A popup will appear, in that popup, enter name and description for the course.
Step 5: Click on “Save” button and your course will be created.
Note: You get the ability to create multiple courses, only if you are a “Biz” or “Enterprise” licence user.