I don't know anything about it, but as they are commercial products, don't they come with some documentation?

Oh, looks like you don't even have to buy it to get at the docs: http://aspn.activestate.com/ASPN/docs/PDK/6.0/Welcome.html and http://aspn.activestate.com/ASPN/docs/Komodo/4.0/komodo-doc-getstarted.html#getstarted_top.

s**lil*;  $*=join'',sort split q**;  s;.*;grr; &&s+(.(.)).+$2$1+; $; =
qq-$_-;s,.*,ahc,;$,.=chop for split q,,,reverse;print for($,,$;,$*,$/)
[download]

Komodo comes with language-specific tutorials to help you get started. For example, go to Help --> Tutorials --> Perl Tutorial, and the Tut should show up in a new window or tab in your web browser (not in the editor).