We recommend Zotero, an open source research organizer that works with your web browser to collect sources and build your personal library as you browse.
Our Zotero Guide has tips for new Zotero users.
Need help using Zotero to create notes and bibliographies for papers? Zotero can organize all your research on your desktop, making it easier to work remotely!
Register for an Introduction to Zotero online workshop.