The New Mexico State Library provides free cataloging resources for librarians, however, its collection was in need of detailed guidelines on the RDA (Resource Description & Access) descriptive cataloging standard. The Cataloging Instruction Guide aimed to address this through the curation and compilation of instructions from freely-available digital resources. The new guide on the State Library’s website defines and describes frequently-used RDA elements and explains how to formulate bibliographic data in accordance with RDA. It also provides access to valuable reference links for librarians at public, small and rural libraries looking to further explore specific cataloging scenarios.