Information systems courses vary greatly in their length and content. Some are part of a larger degree program at the graduate or undergraduate level. Others can be taken independently, as a way to broaden your knowledge. A program of study in information systems typically begins with some basic computer science classes, as well as business classes that cover the fundamentals of statistics, finance, marketing, and more. Once students have this foundation of knowledge, they can choose specialized topics to explore, like networks and telecommunications, computer security, or distributed applications. Courses like these are held at universities all over the world; it should be easy to locate a program that is convenient for you.