Not all case law is published. Generally, appellate court decisions that will be used as future precedent are published (reported) in sources (case reporters) specific to that court. Attorneys use published case law as a means to argue or interpret the law. For more about the print reporter system see the following document.
If you want to search for a specific case or law review articles on a topic, start with WestLaw Campus Research. WestLaw is one of the largest publishers of legal documents and research.
If you want to search for a specific case or law review articles on a topic, start with WestLaw Campus Research, our largest database of legal documents and research. Here's a document on how to search.
You may also search for documents in a practice area.
The Legal Information Institute (LII) at Cornell University Law School is a "small not-for-profit group that believes everyone should be able to read and understand the laws that govern them, without cost." They fulfill this mission by "publishing law online, for free, and creating materials that help people understand" the law. Collections include:
World -- National and International laws