On the course page you can create and manage your course templates and courses. You can create a template in which you can build a learning journey for a learner. From a course template you can create a course in which you can enrol learners. This way you can create different courses with different user groups based on the same template.
The course page also shows the External ID per template or course. Status shows you if a template is in development (so it can be edited), is published (so you can create courses) or is being tested by you (so you can see what a learner sees). More shows all other functionalities. There is also a search and filter function on this page.