I was recently given an assignment involving the use of discourse analysis, and required to design and conduct an experiment using it. The theoretical approach and philosophy behind this approach can be rather heavy going, and with only the most basic concepts introduced by my lecturer, I started shopping around for books on the subject.
This is an outstanding book. While it doesn't provide much detail on experimental design, it provides the most concise, and readable, overview of this approach of any book I've read. It is beautifully, clearly written, and imbues the reader with inspiration for the subject. This is the only required reading textbook I have bought during my education that I have been unable to put down. I read it during my leisure time.
This book has given me great confidence for my assessments on this subject. It is impossible to rate it highly enough.