This manual is the first of three manuals for teaching repair skills to entry-level microcomputer service technicians. Although it focuses on basic computer repair skills, it also highlights the people skills needed by service providers. The manual contains 11 units. Each instructional unit includes some or all of these basic components: performance objectives, suggested activities for teachers and students, information sheets, assignment sheets, job sheets, visual aids, tests, and answers to the tests. Units are planned for more than one lesson or class period of instruction. (This teacher's edition contains materials suitable for reproduction and hand-outs to students.) The units cover the following topics: computer history highlights and career overview, microcomputer overview, safety, assembly and start-up procedures, operating systems, tools and equipment, peripherals, publications and resources, customer relations and recordkeeping, troubleshooting, and parts and supplies. (KC)