Create a custom playlist or course by clicking the hamburger icon in the top navigation bar and then click the "Courses" tab. You will have three options to organize your courses.
When you click on Course Playlists a new window will pop up. If you have no existing courses simply click "Create New Course" button to create a new course
Once you have created a new course folder you can now start adding lessons to your course folder. Please note if you are already in a course watching a lesson, if you click "Save Lesson" button below the video you will be able to quickly create a New Course with your lesson or add the lesson to an existing course