This Guidebook is drafted to assist the integration of the Administration of Criminal Justice Act (ACJA, 2015) 2015 in the teaching relevant laws in Nigeria. Since the enactment and subsequent domestication of ACJA 2015, the landscape of administration of criminal justice has continued to undergo significant changes in the implementation of the primary objective of maintaining speedy dispensation of justice.The Guidebook is a progressive step in the process of developing and strengthening our criminal justice system and equally deepening law students’ knowledge of criminal law and procedure.This Guidebook is the result of extensive research, review and gap analysis of existing legal literature, which has provided a strong justification for the teaching ACJA, 2015 as part of criminal law and procedure, the law of evidence and anti-corruption studies in the law faculties of Nigerian universities and the Nigerian Law School.