Every engineer knows that one of the biggest hurdles to a great recording is bad sounding drums. Therefore, it behooves (love that word!) us all to be somewhat knowledgeable about the dark art of Drum Tuning. I've read a few things out there, and learned quite a bit. Tuning a drum isn't rocket science, and in fact, isn't terribly difficult. I think you can get 90% of the way to a perfectly tuned drum in a just a few minutes and with just a few basic principles. The Drum Tuning Bible is a site maintained by Scott Johnson and it include loads of good info. The gist is that you should tune the top head of a drum for feel, the bottom head for pitch. Get the lugs even, and you're in business!
So, read it, learn it, memorize it, and watch as your recordings improve by leaps and bounds: The Drum Tuning Bible