Is your syllabus clearly organized? Will your students understand it? Is your course site laid out intuitively? Can students identify where to start and how to find different kinds of information?
Just because it’s easy for you to navigate and interpret your course materials doesn’t mean it’s going to be easy for your students–you have a wealth of information about the discipline and course structure that students don’t have when they first encounter it. And it’s very difficult to look at your course through the eyes of someone who doesn’t already have that context.