MySQL University is a free educational online program for engineers and developers who are interested in MySQL development and internals. MySQL University sessions are open to anyone, not limited to Sun employees. Sessions are recorded with slides and audio, so if you can't attend the live session you can review the recording anytime after the session.
For more information on MySQL University, including archives of all the past sessions, and the list of upcoming sessions, visit MySQL Forge - MySQL University.
For information and updates on new MySQL University sessions, you may wish to follow Stefan Hinz's blog, mysqlf. An RSS feed of the MySQL University posts is available here.