How do I do (anything)?

Have you looked at CPAN? The chances are that someone has already written a module that can solve your problem. Have you read the appropriate man pages? Here's a brief index: 

	Objects		perlref, perlmod, perlobj, perltie
	Data Structures	perlref, perllol, perldsc
	Modules		perlmod, perlsub
	Regexps		perlre, perlfunc, perlop
	Moving to perl5	perltrap, perl
	Linking w/C	perlxstut, perlxs, perlcall, perlguts, perlembed
	Various 	CPAN/doc/FMTEYEWTK/index.html
			(not a man-page but still useful)

the perltoc manpage provides a crude table of contents for the perl man page set.