The 000-009 category is Computers, information & general reference (Encyclopedias,
periodicals, and journalism).
http://www.lcls.org/wp-content/uploads/2009/06/pdf/DDC_public_services.pdf
Health is typically found in the 610-619 range of the Dewey Decimal System, specifically in the 610s section. This section covers topics related to medicine, healthcare, and wellness.
The numbers in the Dewey Decimal System are all coded according to categories such as History, Medicine, and Religion without having to look up specific items in an index. The number for horse book is in the 600's.
Folktales are typically classified in the 398 section of the Dewey Decimal Classification system, specifically under 398.2.
Tai chi is typically classified under the number 613.714 in the Dewey Decimal system, which is the section for physical fitness and exercise.
Legends can typically be found in the Dewey Decimal Classification system under the 398 section, which covers folklore and mythology. This section includes various types of legends, myths, fairy tales, and folk tales from different cultures around the world.
Music can be found in the 780s.
Astronomy falls under the Dewey Decimal classification number 520. This section covers general science and includes topics such as celestial bodies, galaxies, and the universe. Within this category, specific topics in astronomy will be further categorized based on their content.
Biographies are typically found in the 920 section of the Dewey Decimal Classification system.
Automobile repair books would typically be located in the 629.2 section of the Dewey decimal system, which covers transportation engineering and automotive engineering.
The Dewey Decimal System places topics related to religion in the 200s section. This includes books on Christianity, Islam, Judaism, and other world religions. Each religion is assigned a specific range of numbers within the 200s to organize related topics.
The Dewey decimal number for chemical elements is 546.8.
The Dewey decimal number for Greek civilization is 938 in the Dewey Decimal Classification system.