Zotero is a free citation manager that makes collecting, organizing, sharing, and citing your sources a breeze. You can save items to your library with one click, and then use Zotero as you write your paper in Word or Google Doc to seamlessly add in-text citations. Then, when you're done, you can automatically generate a works cited list with just one click as well.
As mentioned, Zotero is free to use. However, if you have more than 300MB of data in your library, you will have to pay if you want to sync your library to the cloud, which allows you to access your library from other places. If you're only using it on one computer, however, this will not matter.
The following librarians can help you with your questions about Zotero. Contact them via email or book an appointment directly.