I think a good framework ist a mirror for the hackers philosophy.

That means, if the reader of the document must be better or absolutly involved in the special part of the new modul it's a wasted time to start with it

So a easy to start example is recomented

3 days with about 2 or 3 h, to find out how CGI::Application + CGI::Application::TT and CGI::Application::Session together as classimplementation like # In MySuperclass.pm: works
CGI::Application::Session is not working yet in my code (no cookies are send)

a first workaround by using CGI::session (cookies = ok)

is like wasted time
WHY

easy to answer - i'm still Beginner and i'll start to code more OO as in the past.

different codingstyles and so on makes easy things very difficult to understand

so the workarounds begin and after all a total rewrite may be the best way