Handbook
（重定向自Vademecum）
![A German 1874 handbook for mechanics, millwrights, engineers, technicians, trades people and technical schools](/Images/godic/202502/19/Bernoullis_Vademecum_des_Mechanikers3655.jpg")
Handbooks are collection of miscellaneous facts on a particular theme or year. They generally assume knowledge; hence they are usually used to provide answers to specialist queries. E.g Guinness World records.
A handbook is a type of reference work, or other collection of instructions, that is intended to provide ready reference .