A computerized method for aiding a user in selecting a proper power source for a welding, heating, or cutting application is provided. The user is prompted to provide data about the process type, power source type, and materials used in the application, and is provided with data regarding typical applications and skill levels required for various applications. By applying the process information provided and providing data prompted by the computer system, the user is guided to select an appropriate power source for the user's application and general requirements.