"Word Power Made Easy" is the best book for improving your vocabulary alltime.I regret why just someone did not tell me to read this book when I was in class nine.I was recommended this book when I was in the first year.I bought this book and read it.
And I assure you that if you finish this book properly as they suggested then you will have a strong confidance to pronunce, read and understand a new word.After finishing this book your thinking will be totally changed.