1. The books split into two. The first half focuses on soft skills- resume creation, how to apply for jobs, how to perform well on phone and face to face interviews etc. Second half of the book is core Java review. Instead of being a list of questions with answers, it flips the format on its head- It covers subjects like say, data structures, and goes into a lot of detail. It has example questions as we go through the reviews, so you can learn how to answer them, but in the context of a more in depth discussion. That means you should be better prepared for variations on the questions.
2. I like to think so yes .
3. eBook only I'm afraid! The book doesn't exist in hard copy at this point. However, it will be the premium edition (worth $29), which you can read more about at www.javainterviewbootcamp.com.