To use Zotero, you'll need to install two things:
Both of these are available from the Zotero download page.
Step One: Zotero
Download and install Zotero from the Zotero website.
(There's a different version for each operating system: Windows, Mac or Linux.)
Step Two: Connectors
Connectors allow your web browser to save citations to your Zotero library.
The Zotero downloads page should automatically detect what browser you're using and give you a link.
Each browser has its own version of the Zotero connector, so if you use Chrome, Firefox and Safari you'll need to install all three.
Information on this guide was created by Jason Puckett at Georgia State University Library and licensed under a Creative Commons Attribution-Noncommercial License. The original guide can be found here.