Depending on your resources and the need for expediency with your current project, you may want to also look at the O'Reilly "Programming the Perl DBI" book - http://www.oreilly.com/catalog/perldbi/ - The sample chapter at http://www.oreilly.com/catalog/perldbi/chapter/ch04.html would be worth your review as well.

There is also an O'Reilly book specifically on MySQL (and MSQL) but I don't know how good it may or may not be.

And of course, as always, review other people's code - There are heaps of examples on Perl DBI stuff around and you'll pick up a lot by looking at some of these examples.