1) Code of Criminal Procedure,1973
2) The Indian Evidence Act
3) The Indian Penal Code.
These THREE are called MAJOR CRIMINAL ACTS. Mastery of these three main Acts leads to mastery in almost all criminal matters.
All other laws providing for criminal punishments are called Minor Criminal Acts. For example, The Prevention of Corruption Act,1988, The Prevention of Food Adulteration Act, etc are MINOR CRIMINAL ACTS.