Each presentation will be added as a single page. All your options are on one page. You can select the icon you want from here and other navigation items. If you don't think through all your options ahead of time you can't go back and see the original options page to change things. You have to go back to course settings and edit from there.
Interface is more intuitive.
Here you can customize the layout and edit the course menu, etc. All the settings are in the designer view and on one page. There is a lot of scrolling involved and you can modify only one thing at a time. It allows you to view other course content and link your course with one that another person has created. Some sites might be generated by textbook publishers.