Legal research is the process of identifying and retrieving information necessary to support legal decision-making. In its broadest sense, legal research includes each step of a course of action that begins with an analysis of the facts of a problem and concludes with the application and communication of the results of the investigation.
The processes of legal research vary according to the country and the legal system involved. Legal research involves tasks such as:
1. Finding primary sources of law, or primary authority, in a given jurisdiction (cases, statutes, regulations, etc.).
2. Searching secondary authority, for background information about a legal topics. Secondary authorities can come in many forms (for example, law reviews, legal dictionaries, legal treatises, and legal encyclopedias such as American Jurisprudence and Corpus Juris Secundum).
3. Searching non-legal sources for investigative or supporting information.