I second the recommendation to check the documentation. Still to get you started, here are a few things which solve your exact questions.
# Remove first &
$str =~ s/^&//;
# Remove last &
$str =~ s/&$//;
# Remove all &
$str =~ s/&//g;

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-a

In reply to Re: Reg. Expression - Replace " from string by albert
in thread Reg. Expression - Replace " from string by dani_cv_74

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