You are looking at a very old, but free version of the course.
If you are interesed the most recent version, check it out
on the Perl Maven site.
~/work/training/testing/examples/bc>perl bc7.pl regress
--- random.log Mon Apr 19 23:09:51 2004
+++ regress.log Mon Apr 19 23:38:54 2004
@@ -3,5 +3,5 @@
This is free software with ABSOLUTELY NO WARRANTY.
For details type `warranty'.
If you are interested in on-site trainings by the author, please
contact me directly.