Book Selection 

I strongly recommend this book to anyone who wants to understand better the different roles (Mentor, teacher, coach, facilitator) of Agile Coach in agile organizations.

The book also contains many practical coaching tools for agile coaches and scrum masters to help their agile teams become outstanding so they can deliver both innovation and excellence to their clients.

This book explains how to design, structure, and run the Sprint Retrospective events effectively.

It's very practical and offers many ideas on how to construct retrospectives in general, and how to design them specifically for your team and organization. 

This book uncovers the true meaning and importance of facilitation.

One of the most important lessons I took from it was: the success of any facilitation is more about who we are and how we are being in the room than it is about what tool or technique we use.

The book presents the author's model in which he identified the five key team dysfunctions. The book explains what they mean, and how can we help as servant leaders to overcome them. 

I also purchased the Field Guidebook which contains practical tools and exercises the author recommends using to overcome each dysfunction. 
 

This title is a practical toolkit for any agile coach or scrum master and contains 99 creative exercises you can apply with your team immediately.

I really appreciate how it's structured as well as the variety of activities it proposes (from starting a team to helping the product owner, as well as creative exercises). 
 

Scrum and XP from the Trenches presents the author's overview of a real-life implementation and key lessons learned.

The book is full of great ideas and real life examples. Kniberg's writing style is informal, taking a conversational approach, which I found refreshing and somewhat humorous.
 

In his book, Pink challenges traditional thinking about what motivates people. He argues that the traditional 'carrot and stick' approach is outdated. Instead, he suggests that people are motivated by a desire for autonomy, the opportunity to master a skill, and a sense of purpose in their work. 

Pink also provides practical advice to improve motivation in the workplace and in personal life.