What do you do if you find yourself weeping in the stalls? How should you react to Jude Law's trousers or David Tennant's hair? Are you prepared to receive toilet paper in the post? What if the show you just damned turns out to be a classic? If you gave it a five-star rave will anyone believe you?

Drawing on his long years of experience as a national newspaper critic, Mark Fisher answers such questions with candour, wit and insight. Learning lessons from history's leading critics and taking examples from around the world, he gives practical advice about how to celebrate, analyse and...