Assuming no prior knowledge of computers or electronics—and emphasizing the practical experience students require to become professional computer technicians—this text helps beginning students develop the fundamental skills required to operate, troubleshoot, and upgrade minicomputer systems (PCs). Using hands-on examples and an adequate amount of theory, it covers all the important DOS commands, all types of internal computer hardware, system and memory management, and Windows 95/98/NT/2000. The author is a certified Netware Administrator and an instructor with industry experience, ensuring a thorough, practical resource.