1. Every trick in the book: It means you do everything to achieve something; 

i.e. I have tried every trick in the book to help you!

2. In my book: It means in my opinion;

e.g. I would not do that in my book.

3. By the book: It means follow the rules;

i.e. Soccer is played by the book.

4. Don’t judge a book by its cover! 

e.g. A) I am not going to eat it.  B) Don’t jugde a 

book by its cover. You have not even tried. Eat it.

5. Bookworm: It is a person who likes to read; 

i.e. I am a bookworm. I love to read!

6. Hit the books: It means ”study”. 

e.g. I have got to hit the books today. There is a text tomorrow!