Read of book is good but, in my mind, Perl consists enough documentation for efficient work with him. Try to look over
perldoc site. I hope you will able to find many interesting things.
As regards the books I would like to suggest you
Effective Perl Programming: Writing Better Programs With Perl and
Network Programming with Perl.
And last thing which I would like say, your contacts with more experienced people in Perl sites, mail lists, forums (our monastery is very good place for a know-how activity), for example, will improve your Perl knowlidge.
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SV* sv_bless(SV* sv, HV* stash);
