This chapter describes how to use MATLAB. Short sections will outline some major tools and capabilities that are essential for productively using MATLAB in the Command Window as a sophisticated engineering calculator. A reader new to MATLAB can treat these sections as a tutorial for acquiring the background needed to start using MATLAB. Users with some or with extensive MATLAB experience can treat these sections instead as a convenient reference guide for locating specific MATLAB capabilities directly from the section listings for this chapter in the table of contents.