Zotero is a free tool that helps you keep track of your sources. You can use it to store PDFs, annotate those PDFs, generate reference lists (bibliographies), and even automatically generate your in-text citations. 

This guide provides tips and tricks to make the most out of Zotero.

Zotero Quick Start

1. Install Zotero (and browser connectors) from zotero.org/download.
2. Create your free Zotero sync account at zotero.org/user/register.
3. As you research, save sources by clicking on the Save to Zotero icon (looks like a book, sheet of paper, webcam, etc. depending on the source type) in your browser's toolbar next to the URL. 
4. Organize your sources in Zotero with collections or tags. Edit source information as needed. Take notes if you like.
5. Create citations and bibliographies.