I was recommended to buy this book by Greyhound Rescue West of England, and have found it a useful introduction. It's a fairly thin book and both my husband and I read it in an hour or so.
The writing style is not polished, and the writer is sometimes a little didactic (do this, don't do that, you'll need one of these).
But if like us you are new to greyhounds, it provides a really useful grounding. I would certainly recommend it to other new greyhound owners and prospective owners, though those with more experience will probably find little new here.