This book taught several insights into English and its history many. This book needs an update on the current English trends. When we compare this book with Grammarly editor, this book is way older, but I still give five a star rating. I liked it very much.
I could pass most of the tests except a few on day 30. On day 21st, the book should have tackled the rules for possessive pronouns such as my, his, her, their, etc.