This is the definitive guide on how to be a Time Lord written by the ancient Time Lords but hilariously improved/sabotaged by the Eleventh Doctor as a gift for his successor, the Twelfth Doctor.
Throughout the factual Time Lord sections, the Doctor has crossed things out, added funny scribbles, silly doodles and post-it notes. The central section has been ripped out by an impatient Doctor and replaced with far more important/interesting stuff such as how to correctly wear a fez or dip a fish finger into custard, and other crucial things about how to be a time-travelling hero just like him.
A 176 page hardcover book