My friend is about to get a divorce and I have been helping him find out more.
Oh its the dissolution of the marriage legally
So it is a legal process? Like in court?
Yes terminating the marriage and reorganizing the legal duties and responsibilities
It sounds like a messy process. 
Yes it is because issues like alimony and child support and child custody are settled
My friend has kids so he will have to deal with that I am assuming, What else can you tell me so I can help him out?
legal process involves spousal support, child support , child custody, visitation and distribution of property, 
I see. He also has a house so that will have to be figured out too it sounds like.
(spousal support), child visitation / access, parenting time, child support, and division of debt. In most countries, monogamy is required by law, so divorce allows each former partner to marry another person.
Divorce is different from annulment, which declares the marriage null and void, with legal separation or "de jure" separation (a legal process by which a married couple may formalize a "de facto" separation while remaining legally married) or with "de facto separation" (a process where the
Divorce
Divorce, also known as dissolution of marriage, is the process of terminating a marriage or marital union. Divorce usually entails the canceling or reorganizing of the legal duties and responsibilities of marriage, thus dissolving the bonds of matrimony between a married couple under the rule of law of the particular country or state. Divorce laws vary considerably around the world, but in most countries divorce requires the sanction of a court or other authority in a legal process, which may involve issues of distribution of property, child custody, alimony