Each Margin Notes link should take you straight to the section with the same name as the link. On some screens or browsers the link opens in a new tab, while on others it opens in a new window.
When the new page or tab opens, give it a couple of seconds to go to the correct section.
If the link opens a new window on your computer, the new window may not be full-sized and you may not see the correct section unless you maximize the new window's size by double-clicking on the title bar.
If that doesn't work, highlight the URL (http://www...) at the top of the new window (Just click on the URL with your mouse.) and hit Enter. That should correct the problem.
If you prefer, you can also use the Margin Notes link at the top of the main page of your syllabus to access all of the Margin Notes. That link will take you to your course's main Margin Notes page. Scroll a little way down that page and you'll see a list of links to each of the sections on each of the Margin Notes pages.
I know this sounds complicated but it really isn't. Once you decide how you prefer to access the notes, you'll get the hang of it quickly!