Because of my last post, I'm gonna tell you about LDS baptisms.
In the LDS church, children usually get baptized when they are 8 years old. The reason they don't get baptized when they are babies is because we believe Baptism is supposed to represent getting your sins washed away, and babies are perfect because Satan cannot tempt them (Doctrine & Covenants 29: 46-47). If a child dies before they are baptized, they are perfect and they go to heaven.
Children get baptized in a font, which is like a big bathtub, because we believe in baptizing by immersion. We are following Christ's example when he got baptized by John the Baptist. Immersion represents the death of the person who hadn't accepted Christ and the birth of the person who has accepted Christ.

The children get baptized by a man, usually their dad or a missionary, with the priesthood. John the baptist had the priesthood when he baptized Christ, and Christ was perfect, like a child. Both the child and the man wear white, to represent purity.
Both the child and the man get into the water. then, they stand in the position like in the picture. The man recites:
"(the child's full name), having authority given me of Jesus Christ, I baptize you in the name of the Father, and of the Son, and of the Holy Ghost. Amen." (3 Nephi 11:24-25)
Then, the man fully immerses the child, and brings him or her back up.
In doing that, the child gains the gift of the Holy Ghost. ( I'll talk about that in the next post, if anyone wants me to).
After the baptism, the child gets confirmed a member of the Church of Jesus Christ of Latter-Day Saints.
Well, that's the basic stuff, but if you want to learn more, check out mormon.org (this is not a link). Also, check out the scriptures. Here's a scripture to get you started: Doctrine & Covenants 20: 37.
See ya!