This is the book I've long been waiting for. Giving students some insight into how language is used as an instrument of power and how people can be swayed into submission by carefully chosen words is one of the several really useful tasks linguists can fulfil in the present-day world.
The authors have digested a mountain of literature, both theoretical and practical, and arranged it in a modular structure that can be used both in class or for individual study. In a field as touchy and controversial as CL and CDA, they have sought to give a well-balanced view of what the disciplines are all about without favouring a particular author or approach. The ten paths (which each address an issue : power, gender, race, etc.) are split up into four six-to-seven page units (A, B, C and D) called Introduction, Development, Exploration and Extension. Unlike other books structured in the same way, this one can be read and used "horizontally" (A1, B1, C1, and so on) giving an increasingly precise understanding of each issue or approach; whereas other (Routledge) books I can think of contain cross-references between units which constantly make one feel one should have read all the more abstract introductory chapters first.
The examples used by the authors are the "classics" of the discipline, which moreover gives many units an air of familiarity and makes them easy to use. There is also a companion website with "strands" that can be followed by students turned on by the book. I am sure there will be many.
Final note,