In summary, its a nightmare. Its not the book's fault, rather than the media. Here is how it works -
You answer questions from the book
Now you need to scroll to the answer to verify if they are correct (Scroll/Search/TOC - tedious)
When you get to the answer, you will notice that the questions are not part of the answer
So now you need to go back to refresh your memory on what the question was (again scroll/search/TOC)
You need to do this for over and over again
Again, its a good book but buy the hard copy not the kindle format.