Just was referred to this site which hosts a couple of interesting Lectures/Notes/Presentations including

* “Perl For Newbies”:http://www.shlomifish.org/lecture/Perl/Newbies/
* “Haskell for Perl Programmers”:http://www.shlomifish.org/lecture/Perl/Haskell/
* “PostgreSQL”:http://www.shlomifish.org/lecture/PostgreSQL/

There are actually quite a few other sets of slides of varying topics, worth looking into.