Mormon beliefs are based on the divine revelations recorded by Joseph Smith in the 1800s, which confirmed many traditional Christian teachings but also corrected many doctrines that had been corrupted or forgotten since the time of Jesus. Thus Mormons share many beliefs in common with mainstream Christianity, but have many distinctive beliefs as well.
In 1838, Joseph Smith was asked, "What are the fundamental principles of your religion?" He replied:
The fundamental principles of our religion is the testimony of the apostles and prophets concerning Jesus Christ, “that he died, was buried, and rose again the third day, and ascended up into heaven;” and all other things are only appendages to these, which pertain to our religion. But in connection with these, we believe in the gift of the Holy Ghost, the power of faith, the enjoyment of the spiritual gifts according to the will of God, the restoration of the house of Israel, and the final triumph of truth.
Joseph Smith also summarized Mormon beliefs in the 13 Articles of Faith.