if you haven't already, read
by Joseph Hall (and
to a greater or lesser extent
depending on who you ask :>). i read it as one of my
earliest Perl books after coming from a background in other
languages (...), and found it to be an invaluable resource.
it will allow you to jump ahead of the game, be in two
places at once, read minds, etc., etc., and all the other
wonderful things that the world of Perl makes possible.
understanding the details and implications of the examples
given in that book will make obvious and clearly coherent
many of the Perl idioms that would otherwise come to be
understood only with extensive amounts of time, trial,
and error (especially the latter for some of us).