Zotero is a free tool that helps users collect, organize, cite, and share research sources. It allows users to build a searchable library of references directly in their web browser. Some key advantages of Zotero include using folders to organize research leads and sources for future revisions. Users can input sources like archival materials by adding metadata and attaching files like PDFs to records in Zotero. The document also briefly discusses digital hoarding and includes links to tutorials on basic Zotero functions.