There are a couple of ways to preview The Rhythm Book:
Amazon offers a “Look Inside” function (click on this, which you will find just above the upper right corner of the image of the book).
For the beginning book:
For the Intermediate book:
The publisher, Hal Leonard, also offers a preview (it also lets you hear example support mp3s). Under the image of each book, click on “Closer Look.”
For the beginning book:
https://www.halleonard.com/product/viewproduct.action?itemid=00252025
For the Intermediate book:
https://www.halleonard.com/viewcloserlook.action?id=00252026