Not a recommended purchase! Frankly, while this book does have a lot of information contained within, it's too poorly written, organized, and presented to be of any really help on the test. What is worse is that it is absolutely of no use beyond the test - while the 70-461 and 70-463 Trainging Kits provide some methodology guidance, and real world examples of implementing their content, this book is nothing more than a jumble of MSDN links, and screenshots.
What it does well: Covered everything I saw on the exam. I thought this was the easiest of three MCSA tests - there were instances where only one of the options provided was even remotely possible. So in many ways, the very basic introduction this book gives to the topics is enough to get you through the test.
Where it fails (deep breath): As mentioned, the book is a hodgepodge of screenshots, step by step guides, and actual feature descriptions. Admittedly for some this may be great - I prefer to read about the features, then use them. The book briefly defines a feature, then step by step, where to click to accomplish the task.
Next, the screenshots are screenshots - there's no attempt to edit or enhance them. There are no notes, no highlighted, circled, or zoomed areas. They seem to assume you're following along on your own SQL instance... which has the same screens they print in low res all over the place.
Information is repeated constantly. A chapter starts with an overview of features, then repeats the same information a couple pages later, hardly reworded. Rarely is any concept expanded upon, never do you get a recommendation on when something is worthwhile or when it's helpful. The new SQL 2012 Extended Events got a paragraph. One paragraph.
**Worst** Terminology isn't consistent, and information is contradictory:
Pg. 358 "If you need more than one listener for an availability group, it is possible to create additional listeners by using Windows PowerShell or the Failover Cluster Manager console."
Pg.364 (Lesson Summary) "You can have only one listener per availability group."
You get better explanations, and graphics that are actually helpful (not snipping tool) with the MSDN documentation (diagrams! imagine that, a depiction of the architecture of an availability group).
Recommendation: If you want to actually learn anything then skip this book and read the MSDN docs. If you have experience with prior versions, you have to read less of the MSDN docs.
Just check the test page - it lists what is tested, and what percentage of the test it constitutes.
If you really have no experience, I'm concerned about the book's accuracy, but it does give you a wealth of walk through exercises and guides. It does do that! But again, you'll have to go else where to find out *why* you'd go through that list of steps.
Final note! Search for Hyper-V disk differencing and save time and tens of gigs of HDD space when setting up the practice environment (yea they don't cover that either).