http://www.perlmonks.org?node_id=995487


in reply to Unable to retreive unicode characters in perl 5.10.x

Redirect it's output to file and see that file with your browser(Firefox or something). You can know wheter it is really troubled string or it is a problem of application that you are using( terminal, excel .. and so on).

Documents for encoding ... they are not so long documents.
perlunitut 6 pages Very very short overview for unicode in perl + FAQ.
The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!) 8 pages About Charcter Set, Code Page, Unicode itself. Short History of Unicode.
perluniintro 12 pages This is the first thing to read (I think).
Character Encodings in Perl 7 pages all-in-one doc for encoding. Written by German Author.
perlunicode 20 pages Main document of perl's unicode. Through and precise, or too much for beginner.
Perl Programming/Unicode UTF-8 15 pages This document explains internal encoding of Perl (N8CS, utf-8) and also describe other problems. When you stumbled with 0x80-0xFF problem, this document explains the reason.