Time Lord guide (How to be a Time Lord)

The Thirteenth Doctor's book that she wrote for her next incarnation included pages from a "stuffy old guide" to the Time Lords. The pages presented within the book were amended with additional notes from the Doctor in various incarnations.

Topics covered within the guide included, but were not limited to, the history of Gallifrey, Time Lord biology (compared with human biology), regeneration, the Time Lord Academy, and much more. (PROSE: A Short History of Everyone)