If you have folder of multiple documents and you would like to place that folder in your course, you can drag and drop this resource in after zipping the folder. The folder must be zipped in order to drag and drop it in. Once the folder is in your course, it will not be zipped anymore. It will be a folder of resources for you and your students to access. This is a great option for supplementary, non-required resources.
NOTE: Edit settings to change the "display folder contents" from "on a separate page" to "inline on a course page" and configure Activity completion settings.