Haskell isn't a logic language. It's a functional language.
As for Perl, it is a different language. Not because it's procedural, but because of its background. It's deeply rooted in Unix culture and is largely inspired by AWK. Which is why it relies on so many sigils, has first-class regexes and seems cryptic to the outsider. It was also invented by a linguist, so that makes it even more unconventional.
At it's heart, Perl is a hacker's language. It doesn't restrict you much and is rather free and forgiving compared to a lot of other languages. It's much more liberal than Python, for instance. It's easy to write code that is difficult to read, but on the flip side it's easy to write any code for any purpose, because it really lets you adapt to your own style.
Perl also has a very mature community and has possibly one of the largest and most renowned repositories of libraries and modules - the CPAN. It's not really a trendy language anymore, but certainly worth learning.
My advice is to pick up some books, though. Perl has changed from the 90s and it's very easy to find outdated tutorials. The Perl documentation is good, but scattered.
My recommendations are to start with either
Learning Perl or
Modern Perl (which will teach you clean and contemporary Perl idioms, can be found here:
http://modernperlbooks.com/books/modern_perl/), then read
Programming Perl (also known as "the camel book", it's the de facto standard book, but best read after already having some knowledge).
Finally, if you intend on being a Perl monk, then go read
Higher Order Perl, which teaches advanced language constructs and functional programming techniques.
