Family law is vast and complicated. Family law is a range of laws governing:
Children's rights to proper parenting;
Parental responsibilities towards children;
Marriage, the annulment of marriages and divorce;
The property rights of spouses;
The property rights of people in domestic relationships;
The property rights of the creditors of a person in a relationship;
The personal rights of other people, that may be affected by decisions on the property rights of people in relationships;
The obligations of parents to financially support their children and their (former) partners;
The responsibilities that can be given to extended relatives, etc of children.

An experienced family law lawyer can provide you with advice on family law. Family law in the United States is generally regulated by state law. Federal laws that affect family law are:
25 U.S. Code, Chapter 21 - Indian Child Welfare Act
28 U.S. Code, Section 1738A - Full Faith & Credit Given to Child Custody Determinations
42 U.S. Code, Section 620 - Adoption Assistance and Child Welfare Act of 1980
42 U.S. Code, Section 11601 - International Child Abduction Remedies Act
42 U.S. Code, Section 1983 - Civil Rights of Children
42 U.S. Code, Chapter 132 - Victims of Child Abuse
42 U.S. Code, Chapter 6 - The Children's Bureau
42 U.S. Code, Chapter 67 - Child Abuse Prevention & Treatment & Adoption Reform Act
42 U.S. Code, Chapter 7 - Social Security Act
42 U.S. Code, Section 620 - Adoption Assistance & Child Welfare Act of 1980

A divorce formally dissolves a legal marriage. State law governs the rules of divorce in the United States. Generally you must meet certain residency requirements to be eligible to file a divorce petition. The three forms of divorce are:
Absolute Divorce a judicial termination of a marriage based on marital misconduct or other statutory cause arising after the marriage ceremony in which both parties' status becomes single again.
Limited Divorce often called a separation decree. Many states have a provision for a limited divorce. In a limited divorce, the parties technically continue to remain married but do not live to gether.
No Fault Divorce No fault divorce does not require proof of fault. The parties can petition for a divorce on the ground that the marriage is no longer workable.

In a divorce proceeding, the court will also decide on the division of property between the spouses. The court can direct a spouse to pay support to the other. There are three kinds of spousal support:
Permanent alimony the support payment continues till the death or remarriage of the receiving spouse.
Temporary alimony the payments are spread over a short period. The payments are intended to enable the receiving spouse to stand alone once again.
Rehabilitative alimony is intended to enable the spouse with lesser employability or earning capacity becomes adjusted to a new post-marital life.
If the spouses have children from the marriage, the court may order one spouse to pay child support to the spouse having custody of the children.