I have seen the references to the samples/examples, but I haven't found them either. The wxBook references a CDROM that didn't come with my book. The wxPerl Demo package is pretty good, but the wrapper code added to allow the mass of widgets to be included into a unified application can add to the confusion.
In addition, the questions come in multiple layers. Once you get past the "Hello World" and individual widget examples, there's finding information on the style and structure of complete applications which is maybe not just a wxPerl issue.
Just post specific questions here and to the mailing list and see what comes up. Please note when you cross post to multiple forums.:)
Update1: See the file "TheBridge" on the GitHub repository to see where I have gotten so far in documenting the next steps. This is a draft that I hope to keep adding to.
There's never enough time to do it right, but always enough time to do it over...