Don't go around studying contrived examples online to learn Perl. One of the best ways is to try to gain XP here at Perlmonks by answering questions. You will get shot down at first, sure, but if you keep getting back up and reading the right books and perldocs you will gain proficiency fast.

The reason this is better than contrived examples is that it is pretty humbling to see the dozens of questions asked here daily that you can't answer. It keeps you learning -- not just about Perl but about computing in general. Overall, you are in the right place.