MATLABMATLAB® (short for MATrix LABoratory) is a programmingProgramming platform and numerical computingNumerical computing platform created specifically for engineers and scientists. This chapter provides an essential introduction to MATLAB. It begins by exploring the software environment, including the command window, workspace, and current folder browser. The text covers fundamental operations such as matrix and vector manipulation, which are the core of the MATLAB language. Readers are guided through basic arithmetic, the creation of scripts, and the use of built-in functions for mathematical analysis. Additionally, the chapter details data visualization techniques, showing how to generate and customize two-dimensional and three-dimensional plots. Practical features such as defining user-defined functions, managing variables, and accessing the extensive help documentation are also discussed to equip users with the skills needed for daily computational tasks.