Updating courses with lessons

Each course in the MERN Classroom will contain a list of lessons that make up the course content and what the students need to cover when they enroll. We will keep the lesson structure simple for this application, putting more emphasis on the implementation of managing lessons and allowing students to go through lessons in order to complete a course. In the following sections, we will focus on the implementation of managing lessons for a course, and we will also look at how to update an existing course—either to edit details or to delete the course. First, we will look into how to store lesson details, then we will implement the full-stack features to allow instructors to add lessons, update lessons, update details of the course, and delete a course.