(Also HN seems to have a fairly high tolerance for pedantry, so I hope nobody gets angry if I interject for a moment. What you’re referring to as Mormon, is in fact, Member of the Church of Jesus Christ of Latter-Day Saints, or as I’ve recently taken to calling it, the Restored Church. Mormon is not a religion unto himself, but rather another prophet of a fully restored Christian church made complete with the other apostles and prophets of the past and divinely inspired direction as continuously revealed by prophet Russel M. Nelson.
Many people have heard of the Church of Jesus Christ of Latter-Day Saints today, without realizing it. Through a peculiar turn of events, the nickname for members of Church which is widely used today is “Mormons,” and many of its users are unaware that they prefer to called members of the Church, of Jesus Christ.
There really is a Mormon, and members of the restored church believe his teachings, but they are just a part of the gospel doctrine they believe. Mormon compiled the Book of Mormon; another testament of Christ that complements, confirms, and clarifies the Old and New Testament. The Book of Mormon is the cornerstone of the religion, but arguably useless by itself; it can only function in the context of a complete religion. The Book of Mormon is normally studied in combination with the rest of the restored gospel, the whole system is basically Christ’s church with the fullness of the gospel revealed. All the so-called “Mormons” are really members of the Church of Jesus Christ of Latter-day Saints.)