Go to Site and then on the left click Media Library

Adding a Video Thumbnail
Deleting Media from the Library
Downloading Media from the Library
Finding Our Media with Filters
Preview the Media in the Media Library
Renaming a Media File
Sharing Media and Locking Media
Tagging Media to keep it organized
Uploading Media to the Library
Uploading SCORM/HTML Packages
Uploading Videos to the Media Library
What is the Media Library? A Quick Overview.