I'm an English teacher in China, doing both classroom and private small-group teaching. Language learning definitely requires more than the "chalk and talk" approach that Mr. Marsland warns against, and his book is a great resource for avoiding such a bland style of teaching. Language learning should be engaging, and this book offers good inspiration for making it so.
I have to cope with very unsatisfactory teaching materials oriented towards memorization and drills -- not good for achieving fluency. Also, I'm frequently asked to teach last-minute classes with little or no time to prepare. Resources are frequently limited to little more than a chalkboard, if that. It's easy to become frantic and stuck in a pattern of "Oh God, how do I fill this 90 minutes of class time? What do I do?!"
Many thanks to Mr. Marsland for giving this concise, well-organized and thoughtful book. It's like a splash of cold water in my face when I make my own job more complicated than it has to be. /Lessons From Nothing/ is a nice reminder that you can easily turn "nothing" into "something" if you make it engaging and interactive.