From Help Wiki
Zotero [zoh-TAIR-oh] is a free, easy-to-use tool to help you collect, organize, cite, and share your research sources. It lives right where you do your work - in the web browser itself.

Getting Started with Zotero

Make sure you’ve reviewed http://www.zotero.org/support/ it’s a great place to get started with Zotero.

The basics:

See Also