if you haven't already, read Effective Perl Programming by Joseph Hall (and Randal Schwartz 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).