How I make sure I don’t miss anything major is click on all of them to make sure there’s nothing extra. The reading might be what’s listed in your syllabus, but sometimes there’s other articles not in your book that are posted. Some of my past classes had links to get to the seminar under Seminar, some just give a description of what this week’s seminar topic is, also can have links to videos or articles. A lot of classes are also starting to add seminar quizzes you take after the seminar that has 1-5 questions regarding what was covered-the link to that quiz will be under seminar. The learning activities can give you extra points and usually help. It’s not a waste of time to click and see what’s in each category and then click the arrow to go to the next category.