Ah, I see. Well, I don’t think we really need a Spark Core for Dummies book, do we? The main problem is nobody on the Spark Team has time to write a book, though they have been approached. That’s where I come into the picture. 
I’m not sure how much I’m allowed to say about my book at this point, but it will cover all the beginner aspects. Maybe @zach can chime in with some more information.