1. Click on the Resources tab in the topbar menu:

  

2. Click on the Resources tab in the lower menu:

3. The four default sections are:

Homework
Homework Solutions
Lecture Notes
General Resources

Under each section you can Add Links or Add Files:

When adding a link or a file, you'll be able to set the visibility of the resource to the entire class or to instructors only:

4. You can also add custom section headers or add new sections by clicking Edit Resource Sections:

5. Rearrange your section headers by selecting the "Manually sort using" option, which allows you to rearrange your list by dragging the list icons:

6. Once you've added resources, you can add due dates, change the visibility, edit the name, post a note of the link/file to the Q&A forum, or update the link/file: