The object of this book is to teach the beginner the basics of three popular power system analysis programs. These programs are designed to simulate and analyze electrical power generation and distribution systems in normal operation and in short-circuit. The programs also have many add-on options like protection selection, arc flash analysis, transmission line sag & tension, raceway calculations, transient motor starting, etc. The programs have Demo (demonstration or trial) versions to allow people to tryout and learn about them. This book provides the engineer and technologist with information needed to use the Demo versions of SKM, ETAP, and EDSA for load flow and short-circuit analysis. The beginner learns how to use them on a small, but realistic, three-phase power system. The information gained is similar to that which students pay for in company-taught "Introduction to ..." courses. However, with this book, the student avoids paying tuition, learns at times of his own convenience, and can compare the different programs. In this book, load flow (power-flow) and short-circuit analyses are done on a small steady-state three-phase power system with manual methods. Then, each program is used to carry out the same analyses. Since in practice, three-phase systems are the most often analyzed, only three-phase systems will be considered in this book. The DC and single-phase capabilities of the programs will not be considered. The person using this book should already have an analytical electrical background. Academically, he should be educated to at least the level of a university two-year electrical engineering technology program.