Well from what I hear/read they do seem to keep some of their odder teachings quiet, such as the special undergarments the ministers have to wear in the temple and whatnot, (not sure of specifics there). There are lots of ‘secrets’ that you don’t hear about much until some higher up defects and spills the beans. Whereupon he is immediatly castigated as an untrustworthy source making up stories.
Essentially Mormonism is a form of classic Aryanism (not Nazism, don’t confuse the two) meaning Jesus was an exalted man and men can become gods like him if they live right.
God lives on some distant planet making spirit babies with his wife to impart into human babies here. They have taught in the past that dark skinned people are that way because they are those that sided with Lucifer (who they teach is the brother of Jesus).
Most of these things will take some research for you to understand why their teachings differ from Reformation Christianity (salvation by grace alone through faith alone for the Glory of God alone — the five solas ) and absorb it all. You can start by going to the LDS website and reading for yourself. I find that any church that holds anything up as equal in authority to the Word of God (inerrant in its original manuscripts, a good translation of which is the NASB but many are getting farther and farther from a literal translation - Eugene Peterson’s The Message is a ridiculous NONparaphrase for example) is not worth your time. When people can hold up extrabiblical revelation as something equal to Scripture as a guide for doctrine and its application, they naturally go farther and farther from the truth. It’s human nature. We have enough subjectivism to deal with when we all agree that only the Bible is authoritative, inerrant, and sufficient for all teaching. (that doesn’t mean you don’t read other things of course)
Unless of course that one believes that the heavens are not closed, and that God indeed does speak to man, like in times of old, and that all holy scripture is just that, the words given by God to His prophets.
In this day and age, prior to the second coming of Christ, I am grateful that God does have our best interests in mind to prepare us for the great and terrible day of the Lord. I of course am LDS, and put my trust in God, for we are all in His hands, no matter what our faith.
Cheers