This is the perfect book for players who more-or-less have the basics in place. This will correct your misconceptions and raise your game a couple of levels. The first half of the book is all about bidding, and rather than just talking about basic bidding, tells you what to do in those tough borderline situations. A great example is his "Rule of 20", used to decide whether to open the bidding or not: If the sum of your HCP and the number of cards in your two longest suits is 20 or more, open with your normal 1-level bid; else pass. Very effective, and much better (and easier) than counting short-points, long-points, or quick tricks, since this takes into account the ENTIRE distribution. The second half of the book is about declarer play and defence, and is equally good. What distinguishes this book from the rest is that the author doesn't waste space on the basics, and instead concentrates on the intermediate-to-advanced stuff. Another selling point of this book is Bergen's great sense of humor. Peppered through the book are short anecdotes of actual hands played by him, his friends or students. Most of them are very funny. It is considered a classic, and is the #1 bridge book all time in retail sales.