Nothing secret about it. As a matter of fact if you give me your address, I'll have two bright young enthusastic young men in white shirts and ties sent to your house. They will answer all your questions and even give you tons of free literature including a Book of Mormon.
What is so secret about that?
I'd like to be a fly on the wall on that one!
What else will they tell me? Will they tell me that the Mormon church is the only true church? Will they tell me that other churches, derived from the early Christian church, are in apostasy because their leaders corrupted the scriptures, the ordinances of the original church were changed, and led corrupt lives, and that they lost their authority? Why did Smith join a Methodist church after starting his own church?
There's lots more. I know a Bishop in the Mormon church, and I know more that I could list.