Sensei Media Attachments will let you add supplementary course material like documents or media files.
Installing Sensei Media Attachments
- Download the plugin to your computer
- Login to your WordPress admin panel, and go to Plugins > Add New.
- Go to Upload > Choose File and browse to the folder where you downloaded the Sensei Media Attachments plugin file.
- Double-click the plugin file, select Install Now and then Activate the plugin.