Below are the words spoken by God to Moses that he should teach all of Israel. Divorce should not be taken lightly, going through a divorce is painful and can leave scars, and is never ever cut and dry or even easy to manage afterwards. However it does appear the commandments regarding it are cut and dry and in fact very easy to understand. So much so even a child could figure it out.
1 When a man has taken a wife, and married her, and it comes to pass that she finds no favor in his eyes, because he has found some uncleanness in her; then let him write her a bill of divorcement, and give it in her hand, and send her out of his house.
2 And when she has departed out of his house, she may go and be another man’s wife.
3 And if the latter husband hates her, and writes her a bill of divorcement, and gives it in her hand, and sends her out of his house; or if the latter husband dies, who took her to be his wife;
4 Her former husband, which sent her away, may not take her again to be his wife, after she is defiled; for that is abomination before the Lord; and you shall not cause the land to sin, which the Lord your God gives you for an inheritance.
The only issue regarding remarriage is if divorced woman remarries she may not, regardless of the circumstance, go back to her former husband.