If you don't mind paying for a book, then the O'Reilly book Learning Perl
by Randal L. Schwartz et al is good. It's up to the fourth edition now - I've owned the second and third editions (the second was more example based, which I prefered) and they were both very useful.
Otherwise, there are heaps of perl tutorials accessible from http://www.perl.org/
. Apart from that have a look at man perl
, there is a list of the available man pages for perl, including tutorials.