Some more examples:

c:\@Work\Perl\monks>perl -wMstrict -MData::Dump -le
"my %test = (
   'A' => [ qw(foo one fee three four bar) ],
   'T' => [ 0.9, 0.8, 0.7, 0.6, 0.5, 0.4, 0.3 ],
   );
 ;;
 dd \%test;
 ;;
 my $value = 3;
 my @ra = @{ $test{A} }[ 0 .. $value ];
 dd \@ra;
 ;;
 my @rb = @{ $test{T} }[ reverse 1 .. 4 ];
 dd \@rb;
"
{
  A => ["foo", "one", "fee", "three", "four", "bar"],
  T => ["0.9", "0.8", "0.7", "0.6", "0.5", "0.4", "0.3"],
}

["foo", "one", "fee", "three"]

["0.5", "0.6", "0.7", "0.8"]
[download]

Update: See perlref, perlreftut, perldsc. (Update: In perldsc, see especially COMMON MISTAKES.)