Here are a lot of good links here on the subject (in addition to the excellent ones you already got), follow deep, read all about it, watch the videos and slideshows

Web Programming: For Beginners, Recommendations for client-side state management, web applications: what is the correct way to realise web applications,

or dive right in cgi-app / mojo / dancer / catalyst to start writing perl web apps

Reading other people's modules and codes