I listened to the audio format of Scrum: The Art of Doing Twice the Work in Half the Time in March of this year. It has been some time since I listened to this book but I still remember, how enlightening it was to learn about Scrum. My work has been using this for some time now. Not my department specifically, but the IT departments that we interface with utilize it as well as JIRA.
I like to read business books mixed in with reading for enjoyment whenever I can find a good business book to slip into my to be read list. Which is not hard for me since I have just over 700 books on the Want to Read list on goodreads.
Jeff Sutherland the author of the book is the co-creator of Scrum, so who better to explain how it works and not just that but why Scrum was created in the first place. You not only get a great understanding of Scrum, but in this book you also get a behind the scenes history of its development.
If you are looking for something to get you acquainted with SCRUM this is where to start.