Todd Miller gave a talk at SCaLE 9x on plugin support in sudo 1.8. The slides from the presentation
Alek Komarnitsky has a nice slide show on how to use sudo in a large,
A.P. Lawrence has a nice article that covers the sudo basics entitled Using Sudo.
Peter M. Allan has written a short article on sudo policy basics.
Author Michael W. Lucas has a made his video Sudo: Your’re Doing It Wrong available online.
Michael W. Lucas has also written a book dedicated to Sudo called Sudo Mastery.
Peter Czanik and Todd Miller gave a talk at SCaLE 18x on the changes in sudo 1.9. The slides and video from the presentation are available.