This seems to be the only english language introduction to metaphilosophy currently in print. Luckily, this is a fantastic introduction that thoroughly surveys the various areas within the field of metaphilosophy, while avoiding bogging itself down in jargon and over-categorization that plagues a lot of contemporary textbooks. The book covers topics most philosophers and philosophy courses tend to ignore: what is philosophy good for? what is good philosophy? what is philosophy? If I taught a course on metaphilosophy, this is the text I'd use (unfortunately because it's the only english text available - but even if it wasn't, I would recommend it for its non-technical vocabulary).