A quicker way for you to learn perl would be to read "Learning Perl 6th ed.", and do the exercises at the end of each chapter. Depending on your computer programming experience that could take less than a week. After that, you'll need to learn about references, so you would need to read at least the beginning of "Intermediate Perl".
Regular expressions are another whole language unto themselves, and most computer programming languages employ them, so you'll have to start slow and gain experience as you go along. Regular expressions can be very frustrating when you are just starting out--make sure you understand the 'default greediness' of regexes and that will help.