This document provides an overview of the field of computer science. It defines computer science as the study of the foundations of information and computation and the scientific and practical approach to computation and its applications. The document outlines that computer science has advantages like fast communication, easy solving of arithmetic problems, and processing large volumes of data at high speeds. It also describes the main fields of computer science as theoretical computer science, computer systems and computational processes, and applied computer science. It provides examples of areas within each of these fields.