...
http://www.loc.gov/marc/RDAinMARC.html
http://www.loc.gov/aba/pcc/rda/PCC%20RDA%20guidelines/Post-RDA-Implementation-Guidelines.html
Organizations
http://bcc.musiclibraryassoc.org/BCC-Historical/BCC2013/RDA_Best_Practices_for_Music_Cataloging.pdf
Other institutions
http://libguides.lib.umt.edu/RDA
...
http://lib.stanford.edu/metadata-department/clone-video-cataloging-guidelines
Webinars and Presentations
ALCTS webinars on RDA (free webinars toward bottom of page) http://www.ala.org/alcts/confevents/upcoming/webinar/cat
Adam Schiff's presentations, exercises, etc. http://faculty.washington.edu/aschiff/
Information by topic
GMD mapped to 33x, and Unit of Extent, with MARC fixed fields by Thomas Brenndorfer http://special-cataloguing.com/misc/gmd_to_cmc_and_extent_20120330.pdf
OCLC RDA Policy Statement (Mar 31, 2013) http://www.oclc.org/en-US/rda/new-policy.html