Abstract: The disclosed system and method for computer aided training and certification employs a central network for storing certification information and a plurality of training units. In preferred embodiments, the training units are individual systems comprising training software running on a turn-key based personal computer. An advantage of the invention is that the software is completely customized on each training unit to provide instruction using customized multi-media content, such as high quality digital video footage, taken of the trainee's specific job tasks and work site, as well as questions and instructional scripts customized for the job tasks and work site.