How do I upload files to Resources?
Click Actions, then Upload Files.

To the right of the folder to which you want to add files, click the Actions dropdown menu and select Upload Files.
If you have not created any folders yet, use the site's root folder (bearing the name of the site) to add files.
Option 1: Drag and drop files from your computer.
Drag files from your computer and drop them in box marked "Drop files here to upload".
This will display thumbnails of the files that will be uploaded.
Option 2: Browse your computer for files.

Click in the box labeled "Drop files here to upload."
This will open your computer's File Upload window.