Grammatical errors???really??? Were they in such a rush that they didn't have time to edit the book? Having said that, besides some of the sentences reading like someone that rarely uses English as a third language wrote them, I do like the fact that the book is laid out in quick facts. Just fact, next fact (sometimes repeat the fact a few times), then another fact. I like the book but it is frustrating when it is not even edited. Ahh, welcome to the age of the quick and easy e-book I guess.