To use the Hyperlink Tester, you'll need to setup the hyperlinks in your eLearning courses as per this tutorial.
Then you can use this tool at any point in the future to check if those links are broken. If some are, you'll be able to easily update them without republishing and re-uploading your original course. This will not only make it easier for you to maintain your courses, but also reduce the frustration learners feel when they go to open an interesting resource only to find it no longer exists!
If you have any questions about this demo, please contact Matthew Bibby.