To create a course, click on "Courses" and then on "Create course" in the upper right corner:

After that the following window will open:

Here you can enter the title of your course and add a description.

Furthermore there is the possibility to add a picture and the status + category.

There are 2 options for the status:

Active: The course is online and available

Available soon

To add categories just click on the following button in the upper right corner:

After that the window will open and you can add any categories you want.