Sorry it’s taken so long to answer your questions, Tim. The Mormon Church allows divorce according to civil law, depending on the state and country laws. There are even divorces between couples who have married in the temple.

Once divorced, a person can remarry, and once granted a temple divorce, can remarry in the temple. Many Catholics have converted to Mormonism. Yes, as Paul said, there are three main kingdoms in heaven, the Celestial, Terrestrial, and Telestial. Read more at http://www.mormonwiki.com/Celestial,_Terrestrial,_and_Telestial_Kingdoms
Within those kingdoms are many mansions.

There are two definitions of hell in Mormonism. Sometimes it refers to the suffering we go through in the “spirit world” as we await resurrection and judgment — this suffering is experienced by those who reject the atonement of Jesus Christ, so they must suffer for their own sins. All will inherit a kingdom in heaven except those who commit “the sin against the Holy Ghost,” which is to have a perfect witness that Jesus is the Christ and then deny Him, thus “crucifying Him anew.” Mormons sometimes call this “outer darkness,” because it is complete separation from God. Eternal loneliness and suffering of the soul are a huge part of this. You can read more by looking at Joseph Smith and Sidney Rigdon’s vision of heaven and hell, found at the following link: http://lds.org/scriptures/dc-testament/dc/76?lang=eng

Thank you