Download Zotero and Zotero Connector
Zotero is now a desktop application that downloads to your computer. In addition, there is a browser plugin - the Zotero Connector - that works with Firefox, Chrome, and Safari.
Register for an Online Account
Upload your local Zotero database to the Zotero website and sync citations across multiple computers.
Word Processor Plugins
Zotero integrates with Google Docs, MS Word and LibreOffice to insert in-text citations and create bibliographies. These plugins should install with the Zotero software and the browser plugin.
Set Up OpenURL for Linking
Go to Zotero Preferences to set this up.
Find More Zotero Plugins
Browse a long list of third party plugins.