The manual is available online in multiple media formats. In 20, this manual will be used in Melchizedek Priesthood and Relief Society classes, as well as the Gospel Principles class for investigators and new members. The Gospel Principles manual contains information on 47 core principles of the gospel for personal study and teaching. Much of the information for this Web site comes from a special issue of the Church magazines. Using the teachings and testimonies of apostles and prophets, affirms our faith in the Son of God and the need for all to come unto Him.