1. Mormons state there is no triune God or Trinity, only many separate gods: pantheistic belief.
2. Mormons believe that Christ was once a man like all human beings, but became a god.
3. Mormons [formerly] believed that the father of Jesus Christ was Adam.
4. Mormons believe there is no "original sin" but humanity is only responsible for sins committed in this life.
5. Mormons believe there is no hell for the unrepentant.
6. Mormons believe a person can be "saved" by proxy baptism; baptism for the dead.
7. Mormons believe that after death they will be gods, just like Christ and God the Father and will rule over their own domains (planets).
8. Mormons believe in the process of "continuing revelation" through the presidency of the church, that has allowed the Mormon church to contradict earlier belief, i.e., sidestepping the doctrine of polygamy when it was a doctrine preached implicitly by Joseph Smith.
9. The Mormons believe that when there is a conflict between Mormon tenets and the Bible teachings, the Bible is incorrectly translated and Mormon tenets take precedence. The Bible is only authoritative when it is correctly translated (according to the Mormon church) and agrees with the pre-determined Mormon doctrines.
From this site: http://www.ondoctrine.com/conversa/3morm004.htm
Are you SURE they're more in tune with 1st century [or any other] Christianity?
I sure their are places for your exposition of doctrine. The internet is full of LDS and anti-LDS sites. Sorry I mentioned anything about it. Why don’t you decide what Mormons believe instead of asking them? I think that will work.