Dan Richter is running an updated version of the Perl course on the courses mailing list. To receive lessons, join the courses list and be sure you're receiving the Perl topic.
He writes that the course is structured to allow you to choose your time commitment. If you put in more time, you'll get more out of it. If you don't have much time, that's okay, you'll still get the basics.
For more information, see the announcement.