Question strategy:

• formulate question in your head
• think of some keywords related to that question
• search the web, or search a specific forum for answers or opinions that have already been written
• THEN, if still not satisfied, ask a novel question with some specifics

How to ask questions the smart way. You may find tons of other O'Reilly and non-O'Reilly titles which mention Perl. You might find specific reviews of these books. You might even find those reviews on this site.