This is the standard curriculum for all mission presidents, full-time missionaries, and ward missionaries. It may also be used by leaders and members in stakes and wards. It describes the principles of effective missionary work and the doctrines that missionaries are to study and teach. This book includes the lessons that are taught before and after baptism. New members should be retaught the first four lessons and should also be taught the fifth lesson. Full-time missionaries, ward missionaries, home teachers, and visiting teachers may work together to teach these lessons.