Jim York, a certified scrum trainer, and coach asserts: "Scrum is Simple." Scrum is challenging to implement. Many people I see in businesses say they struggle to understand how to begin using Scrum.
Others have teams that use some Agile techniques but are still a long way from being what Jeff Sutherland refers to as hyper-productive.
Since I published the initial edition of this short manual four years ago, several new and top-notch Scrum books have been released. Succeeding with Agile [Cohn 2009], Agile Product Management with Scrum [Pichler 2010], Coaching Agile Teams [Adkins 2010], and Essential Scrum [Rubin 2012] are a few books I've read and would suggest to my students. However, the majority of people simply don't read them, so there still seems to be a need for concise guides like this one. First and foremost, I wanted to cling to the core of Agile and Scrum while offering a more comprehensive and well-rounded reference. The techniques outlined have been updated to reflect what I teach and coach now as a second goal. Agile is an evolving collection of processes and patterns that, by design, will alter over time. The third and final goal was to keep it as concise and free of "fluff" as possible. For those who enjoy reading more, the reference section has been greatly increased.
Initially, I had written: "I'm hoping that this little booklet will serve as motivation for you to practice Scrum and Agile a little bit more each day. More significantly, I hope it will inspire you to get out of the old methods of working that just don't, well, work and find new ways that will result in higher quality, quicker delivery, and most importantly, more enjoyment for you, your team, and your entire organization." Its main objective remains this. There is still one more thing you can count on: without practice, you will never get better at using Scrum (or any other Agile process). So why are you still waiting? Just get started!