This is a really great package. Not only Mattia did an amazing job wrapping wxWidgets on Perl, but he also hands out this other Pe(a)rl to us.
Upon installing Wx::Demo, you'll get a program called wxperl_demo.pl, which contains about all the widgets you can have. Not only that, but every example is split in two tabs: one with the demo for the widget you selected, and another with the actual source code of that demo, so you can see exactly how it's done.
If you learn better by example, you'll have no excuses not learning wxPerl.