If you have a little more time - say, 30 minutes - and want a comprehensive video overview including all the major features of Zotero, from installation, gathering research, and creating bibliographies, check out "Learn How to Use Zotero in 30 Minutes" by our library colleagues at Paul V. Galvin Library at Illinois Institute of Technology.
A BIG Thank You to Reed Library at State University of New York at Fredonia for the following quick tutorial videos on Zotero: