This document is a workbook for drafting students learning the basics of reading and interpreting electronic drawings and diagrams. The workbook contains eight units covering the following material: basic symbols; circuit symbols; electron tube symbols; winding symbols; semiconductor symbols; miscellaneous symbols; schematic diagrams; and connection diagrams. Final quizzes for each unit are included at the end of the workbook. Each unit contains an objective and performance indicators, introduction, information sheets, self-assessment quiz with answers provided, and a study guide including references for further information. The materials are illustrated with line drawings. (KC)