I've never read a "For Dummies" book, so I grabbed this along with a few other personal finance books, just to tidy up my bookkeeping, etc. I found it rather obnoxious. It WAS written in a readable, conversational style, but that's not what I want from an instructional book. I want to be able to read and skim quickly, gleaning what I want from it. There was way too much breezy silliness to wade through.
That said, it did have some good information and tips in it, so it wasn't a total waste.