It's a trip through a year; with letters and observations by Roald Dahl himself about everything under the sun - from what he got up to as a boy and the best time of the year for conkers, to why he hated Christmas.

Jam-packed with weird and wonderful facts (find out what the most expensive food in the world is, and how to cook savoury crocodile), plus jokes, quizzes and top tips, here is the stuff that every Roald Dahl fan should know.