An extremely poor Kindle conversion. It's hard to believe that the publishers have the cheek to charge for rubbish like this. The formattig is all messed up, many of th especial characters are not reproduced correctly, and the exercises are given in images with unreadable text.
The content of the printed version is excellent, but the Kindle version is unreadable.
This book was very helpful during my university days. Now 6 years later, I keep refereeing to it when I want to point out something to students relatives or myself. It's simply the history of English language its grammar the simplification if case inflections, explains why spelling is so chaotic nowadays, explores the world Englishes and more. Highly recommended.