http:www.mormon.org is one place to get basic information.
You could go to your nearest LDS Temples visitor center, and take a tour.
You could go to your Bishop, Home Teachers, your Priesthood Quorum President.
Additionally there are Temple Preparation classes in many Wards.
If there is some similarity between what Freemasons do, and what Mormons do, then this simply means that Freemasons have some truth to them. Freemasons trace their beginnings to the Temple of Solomon, and the Hebrew Temple in Egypt (something that Josephus wrote about). If you look at many Freemason buildings, there often is Egyptian symbols or architecture on the outside of these buildings.
If two students took a test, and these same two students have an answer that is similar to each other, this is not prima facie evidence that one or the other student is wrong. Nor is it necessarily the case that one student was copying from the other. It might mean that both have done their research, and both are correct.
Many X-Mormons lurch on to Anti-Mormon screed, to justify their own lack of a testimony of the truth. Jesus Christ offended people when He said.. that one must eat His flesh, and drink His blood, to be a true follower of His.
What Jesus Christ was talking about was an ordinance. Jesus Christ was talking about symbols... and this is now known as Sacrament.
The nature of a symbol is this. A symbol is not the thing. A symbol is a representation of the thing. Only those pure in heart can know of things in Heaven. If you are wicked of heart, and you try to understand the things of God, you will most assuredly fail.
God gives wisdom to whom He will. Only one is good, said Jesus Christ, and that is God. To be good, one must be wise. To be wise one must live the commandments of God, and by so doing, bring down the power of God, into your life.
The Power of God, is for the purpose of healing the sick of body, and the sick of spirit, and to make a person whole before the Lord God Of Israel.
With God nothing is impossible, therefor, all wisdom can be yours, if you follow His Commandments, and Obey God's highest virtues, the highest virtue of all being Charity.
Some things you can learn by reading a book. Some things you can go to College and learn. There are other things however, that can only be revealed by almighty God, same as it was in former times, so it is in these the Latter Days.
Just going to the Temple does not guarantee that you will learn anything. Fakers will learn nothing. And they who enter the Lord God's Temple unworthily, will drive themselves from the true Church of Jesus Christ... no one will have to drive them away. They will do that themselves.
If you want wisdom then pursue righteousness with full purpose of heart. And then you will have both wisdom and righteousness. And then anything that ask you will receive, as long as you have faith the size of a mustard seed.
And faith the size of a mustard seed can move Mountains.
Therefor any sin that you may have can be overcome, because God's power is sufficient to overcome all sin in every human that now lives or has lived, or ever will live.
Thus the upward spiral to Eternity is available to all... even to a Prostitute who would have the nerve to wash Jesus's feet with her hair and her tears.
The power of Jesus Christ is infinite. And His Holy House is the Temple, and that is why Mormons build Temples to God, just as the Israelites did.
The Mason's are a fraternal organization and they have their purpose. THE Church Of JESUS CHRIST Of Latter Day Saints has it's purpose.
And what is the grand purpose of the LDS Church?
To perfect imperfect man. Because God is Perfect and Powerful, that is why this can be done.
The LDS Temple was expressly created to help in that upward spiral process.
The stairway to Heaven... is accessible to all who show enough faith to live Jesus Christ's holy and eternally righteous Commandments.