I found this a very helpful little book which gives a good account of the basics of wine without being patronising or pompous. I suspect that I'm like quite a few people who might be considering this book - I'm not a wine expert by any means, but I have picked up some knowledge of grapes, countries and regions and so on - and I found that it filled in a lot of the gaps in my knowledge and has some really useful information in an accessible and easy-to-use format.
The book covers the basics of how wine is made, from the growing of the grapes to the bottling and ageing and gives an overview of the way in which the climate and "terroir" of a region and the techniques of winemaking can affect the taste of the wine. There is a pretty comprehensive list of grape varieties with their characteristics and sections on how to chose, store and enjoy wine, all full of useful guidance - particularly the section on pairing wine with food - and some basics of buying wine and cooking with wine. The major section of the book, though, is "Wine Regions of the World," which I thought was very good. It gives, country by country, a brief but informative guide to the various regions with a guide to their main characteristics and some suggestions of "One to watch" producers. To be able to look up easily a little bit of information about an obscure Portuguese region, for example, or to have a simple guide to the labyrinthine appellation systems of Bordeaux or Burgundy is a real bonus for me and I found this a really helpful section.
It's a very handy and easy book to refer to and the pocket-size format does mean that if you wish you can easily take this little book with you when you might be buying wine, which is a useful feature. The "Bible" in the title is a very exaggerated claim, but I'd certainly recommend it to anyone who drinks wine and would like a simple, practical and pretty comprehensive guide to augment their knowledge.