I got the book! (Thanks to my dad, of course) and currently reading it.I can only give a bit feedback - quite interesting and enjoyable to read, and I am at the part where the Wicked Witch starts to become "wicked". It's a "pre" to the book of Wizard of Oz, and some of the questions that I have been meaning to ask was answered so far in this book.
To give you an idea:
* Why red scarlet slippers / shoes? Only to find out that those shoes are a gift of a father to his favorite daughter..
* Why her skin is green...
Those sorts of questions.
Can't wait to finish this so that I go on reading "Son of a Witch" :)