I want to read this book but I don't want to buy it. Is there any way to get it for free?
No, there is no way to download this book from Google Books for free.
Yes, you can download this book from Google Books. Here's how:
Go to the Google Books website: https://books.google.com
Search for the book you want to download.
Click on the book's title.
On the book's page, click on the "Download PDF" button.
The book will now download in PDF format.
There might be, but I'm not sure how.