Editors’ Summary: In “Gestionar fuentes primarias digitales con Tropy,” a Spanish-language tutorial published in Programming Historian, Douglas McRae shows researchers how to start a Tropy project to manage digital images of their primary sources. Addressing the overload historians face when accumulating hundreds of archival photographs, McRae presents Tropy—a free, open-source tool developed by the Roy Rosenzweig Center for History and New Media—as a solution for organizing, describing, and analyzing digitized materials through flexible metadata templates, transcriptions, and notes. The tutorial guides readers in building projects from both online collections and their own archival photographs, requiring no programming knowledge.