Third Book Posted: January 14, 2020

There is a 3rd book listed for the course in the bookstore:

Head First Agile
by Jennifer Greene, Andrew Stellman
Publisher: O'Reilly Media, Inc.
Release Date: September 2017
ISBN: 9781449314330

I will only use some of the material from this book. It is available for free on Safari Books Online. I would not purchase the book for the course unless you want to read the whole book.