Greyhound-L.   This is the list to subscribe to when you take the plunge (or even before).   It's an invaluable source of information with about 2,000 subscribers, many of whom are adoption group reps, breeders, and trainers.  And they are kind to newbies, often answering the same questions over and over again.

The Greyhound Project.   The Greyhound Project's Adopt-a-Greyhound site shows you how retired racing Greyhounds become greyt pets.  Among other things, they offer an introduction to greyhounds, a place to learn a bit more about the dogs, and a list of places where you can adopt one.