Any books with a crime theme.
Any books to do with games.
Anything to do with cookery, food or drink.
Individual short stories or series of short stories.
Hobbies, pastimes, games and other diversions.
Anything about the broadcasting in terms of either content or technology.
Anything about the development or use of technology.
Any subject matter relating to the use of the internet.
Any book addressing a business topic.
Any work that provides a history.