My Credit from Amazon

One book I am thinking about getting is this one,

Have any of you guys read this yet? And if so do you think this would be a good one too spend some of my money on it?

I did also already bought the following,

Which was full price. But the other two were on my wishlist and was on sale for an e-books.

I have still plenty left due to what I had still in my account, plus the $15.00 I got from winning a gift card. I do want to save 30.00 for some upcoming e-book's. So I have 30.00 to spend. This is so much fun!!!!!!!!