This brief tutorial focuses on the most commonly-used features of Lotus 1-2-3 Release 4 for Windows spreadsheet software. The text is suitable for introductory, hands-on lab work and is comparable to the O'Leary lab modules. Screen displays monitor student progress; practice time exercises reinforce concepts in each lesson; and "alternatives" illustrate shortcuts and optional methods to execute commands. A teaching material set includes an instructor's manual and data disk (3.5" IBM) which contains student data files, solutions to exercises and projects and test questions. Instructors will need RH Generation Software to run the test questions on disk.