Zotero will run on any operating system. It requires Mozilla Firefox 3.0 or greater. Installation only takes a few seconds.
To install, go to http://www.zotero.org/ and click the red "Download" button. Click "Install Now" and follow the instructions. To use all of the features available, you'll want to install the Beta Version.
If you see the message “Firefox prevented this site from asking you to install software on your computer," click "Allow".
Restart Firefox and you're all set! You'll see a small Zotero button at the bottom of your Firefox window.
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.
This icon will appear in the bottom right hand corner of your browser.Click on the icon to reach your Zotero library.