A Reading List for Agile Coaches, Trainers, and Leaders in 2026
This isn't a comprehensive list of every agile book ever written. It's the books that have actually shaped how I think and work. Most aren't specifically about agile, but they all deal with themes agile practitioners need to understand: feedback, adaptation, complexity, motivation, and how people actually behave under uncertainty.
I've organised them by theme rather than alphabetically, because that's how I think about them. The list has grown significantly since I first published it in 2017. The biggest additions are in AI and complexity, which tells you where the field has moved.
I've been ruthless about what makes the cut. If a book is here, I've read it and it changed how I work. If it's not, it either didn't land for me or it's been superseded by something better.
Complexity, Uncertainty, and Why Agile Exists
If you only read one section of this list, make it this one. These books explain why agile works where it does.
Adapt by Tim Harford. The best book on why grand plans fail in a complex world. Harford shows how the most complex problems can only be solved from the bottom up by rapid experimenting and adapting. The book I recommend to leaders who are sceptical about agile. [Related: The PDCA Cycle]
The Black Swan by Nassim Nicholas Taleb. We systematically underestimate the impact of rare, unpredictable events. Foundational for anyone working in uncertain environments.
Simple Habits for Complex Times by Jennifer Garvey Berger and Keith Johnston. Practical approaches for leaders navigating complexity. Less theoretical than many complexity books and more useful day-to-day.
Superforecasting by Philip Tetlock and Dan Gardner. How some people are remarkably better at prediction than others, and what they do differently. Essential for anyone involved in planning or estimation.
Managing the Unexpected by Karl E. Weick and Kathleen M. Sutcliffe. How high-reliability organisations operate safely in complex, high-risk environments. Directly relevant to AI agent reliability.
The Fifth Discipline by Peter M. Senge. The classic on learning organisations and systems thinking. Still relevant, and the source of the Senge quote I use in the PDCA post.
How Big Things Get Done by Bent Flyvbjerg and Dan Gardner. Data-driven analysis of why large projects fail. Spoiler: it's the planning, the politics, and the overconfidence.
Liminal Thinking by Dave Gray. How our beliefs create our reality and how to change them. Short and surprisingly powerful for coaching conversations.
AI and the Future of Work
New to the list since 2024. The field is moving fast, so I expect this section to change most.
AI Snake Oil by Arvind Narayanan and Sayash Kapoor. The most honest, evidence-based book on what AI can and cannot do. Written by the same Princeton researchers whose reliability paper I reference in The Best AI Strategy Is 200 Years Old. Start here.
Co-Intelligence by Ethan Mollick. The best practical guide to working with AI as a thinking partner. Avoids both hype and doom. Focuses on what works right now. [Related: Humans in the Loop Is Not a Checkbox]
The Coming Wave by Mustafa Suleyman and Michael Bhaskar. The AI containment problem, from someone who helped build it. Sobering reading on the gap between technological capability and human readiness.
Exponential by Azeem Azhar. The growing gap between exponential technology and linear institutions. Directly relevant to the "exponential gap" diagram I use in training.
Product Thinking, Lean, and Innovation
How to deliver the right thing, not just deliver things right.
The Lean Startup by Eric Ries. The Build-Measure-Learn loop. Still essential. The book that made MVP part of everyday vocabulary, even if most people misunderstand what it means. [Related: MVP Thinking in the Age of AI]
Escaping the Build Trap by Melissa Perri. Why organisations get stuck building features nobody wants, and how product management should actually work. The best book on the shift from project to product thinking.
Outcomes over Output by Joshua Seiden. Short, clear, and directly applicable. Measure what changes for the customer, not what you shipped.
The Mom Test by Rob Fitzpatrick. How to talk to customers without accidentally getting them to lie to you. Short, funny, and devastatingly practical. Every product owner should read this.
Jobs to Be Done by Anthony W. Ulwick. A rigorous framework for understanding what customers actually need. Pairs well with The Lean Startup.
The Phoenix Project by Gene Kim, Kevin Behr, and George Spafford. The novel that made DevOps accessible. A modern version of The Goal, set in an IT organisation falling apart.
The Goal by Eliyahu M. Goldratt and Jeff Cox. The original business novel. Theory of Constraints explained through a story about a failing factory. Still brilliant after forty years.
Teams, Leadership, and Organisational Design
Team of Teams by Stanley McChrystal. How JSOC transformed from a hierarchical command structure to an adaptive network of small, empowered teams. The most compelling real-world case for agile organisational design I've read.
Turn the Ship Around! by L. David Marquet. How a submarine commander created a leader-leader model instead of leader-follower. Directly applicable to self-organising teams.
The Fearless Organization by Amy C. Edmondson. The definitive book on psychological safety. If your retrospectives aren't producing honest feedback, this book explains why.
Team Topologies by Matthew Skelton and Manuel Pais. How to organise teams for fast flow. The most influential book on organisational design in the agile space in the last five years.
Accelerate by Nicole Forsgren, Jez Humble, and Gene Kim. The research that proved the connection between delivery practices, organisational performance, and culture. Data that backs up what agile practitioners have been saying for years.
The Culture Code by Daniel Coyle. What makes some groups smarter and more effective than others. Practical, evidence-based, and full of stories.
Rebel Ideas by Matthew Syed. The power of cognitive diversity for problem-solving. Directly relevant to cross-functional team composition.
Peopleware by Tom DeMarco and Timothy Lister. The classic on managing software teams. The core argument, that people and environment matter more than technology, hasn't aged a day.
Coaching, Facilitation, and Personal Development
Time to Think by Nancy Kline. The book that most shaped my coaching practice. The quality of our thinking depends on how we treat each other while thinking. Profound and practical. [Related: Why Coaching Works]
Coaching for Performance by Sir John Whitmore. The foundational text on performance coaching and the GROW model. If you only read one coaching textbook, make it this one.
The Coaching Habit by Michael Bungay Stanier. Seven essential coaching questions. Short, practical, and immediately usable. Good for managers who want to coach more and tell less.
Coach the Person, Not the Problem by Marcia Reynolds. How to shift from solving problems to developing the person's thinking. Aligns with Kline's Thinking Environment approach.
Humble Inquiry by Edgar H. Schein. The art of asking instead of telling. Short and essential for anyone in a coaching or facilitation role.
The Art & Science of Facilitation by Marsha Acker. Goes beyond techniques into the mindset and stance of an effective facilitator.
From Contempt to Curiosity by Caitlin Walker. Clean Language and systemic modelling applied to organisations. A different approach to coaching conversations worth exploring.
Behaviour, Decision-Making, and Communication
Thinking, Fast and Slow by Daniel Kahneman. The two-systems model of human decision-making. If you coach, lead, or facilitate, you need to understand cognitive biases. This is the source.
Black Box Thinking by Matthew Syed. How feedback drives performance and why we must learn from failure. Essential for building a continuous improvement culture. [Related: The PDCA Cycle]
Drive by Daniel H. Pink. Autonomy, mastery, and purpose as the three pillars of intrinsic motivation. The research behind what Moving Motivators makes practical. [Related: What Actually Motivates Your Team]
Atomic Habits by James Clear. How small changes compound into remarkable results. The best practical book on behaviour change. Directly relevant to continuous improvement.
The Checklist Manifesto by Atul Gawande. Why checklists work in high-stakes environments. A compelling argument for simplicity in Cynefin's Clear domain.
Made to Stick by Chip and Dan Heath. Why some ideas stick and others don't. Useful for anyone who needs to communicate change, which is every agile coach.
Range by David Epstein. Why generalists triumph in a specialised world. A counterargument to the pressure to over-specialise, and relevant to cross-functional thinking.
Sapiens by Yuval Noah Harari. The big picture of human history and why we organise the way we do. Not about agile, but it gives you a lens for everything else on this list.
Where to Start
Don't try to read them all. Pick the theme that matches where you are right now:
New to agile? The Lean Startup, Black Box Thinking, Team of Teams.
Moving into coaching? Time to Think, The Coaching Habit, Humble Inquiry.
Making sense of AI? AI Snake Oil, Co-Intelligence, The Coming Wave.
Leading a transformation? Turn the Ship Around!, The Fearless Organization, Accelerate.
Working on products? Escaping the Build Trap, Outcomes over Output, The Mom Test.
I update this list as I read. If you think something's missing, get in touch.
Related reading:
- The Best AI Strategy Is 200 Years Old - draws on several of these books
- Why Agile Exists - complexity thinking applied to agile
- What Actually Motivates Your Team - Drive and Moving Motivators in practice
Alun Davies-Baker is an agile coach, trainer, and the founder of Altogether Agile. He helps organisations navigate complexity using empirical approaches grounded in Business Agility.