Here are some links.
The local leadership determines who is worthy. Regular sunday service are held in their chapels, only special ceremonies occur at the temple.
Here are the LDS temple recommend questions (there are also several things you have to do consistently like paying a full 10% tithe and regular attendance, no coffe/tea, no premaritial sex, etc).
The LDS are baptized, endowed (oath and handshakes) and married by proxy for the dead. They believe that the dead are on the other side just waiting to become Mormon. No, I’m not kidding.
Endowments are a special ritual where you get a new name, take oaths and learn the secret handshakes that are needed to get into heaven and progress to become a god yourself.
Here are some links (warning it is wild)
http://utlm.org/onlinebooks/changech22a.htm
http://utlm.org/newsletters/no76.htm
http://utlm.org/topicalindexc.htm#Temple%20Ceremony