To install, go to the Zotero site and choose the appropriate program. Click Download and follow the instructions.
If you have any problems, check the Zotero installation page.
You'll probably also want to download and install the Microsoft Word citation plugin (or the OpenOffice plugin if you're using OpenOffice). These allow you to easily cite items from your Zotero library in your papers.
Need help? Article unavailable? Looking for more research on a topic? If I'm not available, stop by the reference desk in Renne Library (1st floor) or use the other options below.