This guide is intended for use in developing informational materials intended to be read by adults with limited reading skills. Most of the examples used throughout the guidelines relate to food and nutrition; however, the concepts they illustrate are applicable to any topic. The following topics are covering: knowing a written message's intended audience; deciding on and organizing the message to be conveyed; writing the message (tips on using words, writing sentences and paragraphs, and using headings); using illustrations to support the message; formatting to get attention (tips on design and layout, lettering, and visual design); pretesting before production; using a checklist for written materials; and using word lists and readability formulas. A list of selected references and user evaluation form are also included. (MN)