Designed and programmed by the staff of the Courseware and Curriculum Applications (CCA) Group (a unit of the Computer-Based Education Research Laboratory at the University of Illinois at Urbana-Champaign), this instructor's guide describes a computer-based spelling curriculum designed to help adult and adolescent students learn basic rules of spelling and to master some of the more commonly misspelled words. The guide outlines five units of instructional materials. The first unit has four lessons on common spelling rules: final e, doubling, adding prefixes and suffixes, and changing y to i. The second through fifth units provide drill on commonly misspelled words that do not necessarily follow regular spelling rules, with 30 words in three groups of 10 in each of these four lessons. Each unit of the guide contains a pretest and computer instruction. Each lesson in the guide gives the lesson's file name, authors, author affiliation, and objectives; describes the lesson and interactions; and notes the intended audience, completion time, and associated lessons. An appendix lists the files used in this guide. (SR)