The following resources can help you learn more about Resource Description and Access:
Functional Requirements for Bibliographic Records, Rev. Ed. 2011.
Functional Requirements for Authority Data, 2009.
Library of Congress RDA page and Library of Congress RDA Training Materials. These are the best Web sites for information on RDA.
Maxwell, Robert L. Maxwell’s Handbook for RDA. Chicago: ALA, 2014. The best book on RDA.
Oliver, Chris. Introducing RDA: A Guide to the Basics. Chicago: ALA, 2010. An excellent primer, especially on theoretical questions.
RDA Record Examples. Excellent examples of RDA MARC records for a variety of formats.
Stanford—RDA Questions and Answers. Very detailed.
Planet Cataloging. A great collection of cataloging-related blog posts.