Collate the deceased loved one's paperwork, such as insurance and other important documents. Many people keep their papers all in one secure location, such as a safe or even a set of files. Some people do not, however, or may have more than one place for stored paperwork. Collecting all the documents together will let you work through them all more easily.
Contact the deceased person's attorney, accountant or other associates with whom she had a special relationship of trust and confidence. If such a person exists, he may be holding the will for the deceased person in order to keep it safe. You or he can then submit the will to probate by filing a petition with the clerk of the court.
Contact the clerk of the probate court for the area in which the deceased person lived and inquire whether a will has been notarized in the deceased's name. Some courts allow people to record their wills with the courts, in which case the court will have a copy of the will that can be used in probate. The court may also be able to provide copies of the will for a fee.