Download Zotero and associated plug-ins using these links:
Zotero is a free, open source, easy-to-use Firefox add-on (and now works with Chrome and Safari) that helps you to collect, manage, cite, and share your research sources. It lives right where you do your work - in your web browser. Designed to be intuitive and unobtrusive (it looks a lot like an iTunes library), Zotero is a powerful and handy tool for any academic.
Zotero works on all three major operating systems: PC, Mac, and Linux. Please note that Zotero does NOT work with the Microsoft Explorer web browser.
Check out the Zotero support site for for assistance.
Getting Stuff Into Zotero from zotero on Vimeo.