seems to surface both a bunch of links from the beginning of the last decade, and some current stuff. I would be more familiar with the former, so it may be best to form your own opinion on the current state of things. But I'm commenting here, to the effect that there is much information readily available.
P.S. At least of a decade ago, it helped to have a good understanding of Excel and its programmatic interface. One or more Perl modules made it easy to call into this interface, but you still needed to know what was available and what it would do.
https://www.google.com/#q=perl+excel
seems to surface both a bunch of links from the beginning of the last decade, and some current stuff. I would be more familiar with the former, so it may be best to form your own opinion on the current state of things. But I'm commenting here, to the effect that there is much information readily available.
P.S. At least of a decade ago, it helped to have a good understanding of Excel and its programmatic interface. One or more Perl modules made it easy to call into this interface, but you still needed to know what was available and what it would do.