To install Zotero for Windows, go to the Zotero Downloads page and click the Download button.
Double-click on the Zotero setup file and select Run.
Follow the instructions on the Zotero Setup Wizard and you're done!
The Zotero Connector is a feature of Zotero that will automatically sense content as you browse the web and allow you to save it to Zotero with a single click. It is available for Chrome, Firefox, and Safari. To install the Zotero Connector, go to the Zotero Downloads page and click Install Connector.
From the pop-up window, click Add extension and the Connector will appear on your toolbar.