2 Open Books - Poorly written and needs editing.

2.5 Open Books - Below average read and not worth recommending.

3 Open Books—Average Read.

3.5 Open Books—It's worth the readers time to read this book.

4 Open Books—Would highly recommend this book to friends.

4.5 Open Books—One of the best books I've read.

5 Open Books—Extraordinary read. Very highly recommended.