I realise I am late to the thread but I felt I should recommend the Perl CD Bookshelf by O'Reilly. Not only is it searchable but it has most of the Perl books you would need.
Certainly, early in your career, the most important (IMHO) would be the Learning Perl book and the Cookbook. Considering that you get 7 books on CD-ROM plus Perl in a Nutshell included as an additional paperback (its alson one of the 7 on the CD) I think its good value.