This document provides instructions for previewing materials before reading them in depth. It recommends spending 30 seconds to 2 minutes previewing articles and books by skimming titles, headings, pictures and trigger words. The purpose is to get a general idea of the content and determine if the material is useful for one's goals before deciding whether to read further. Specific preview techniques are outlined, including making word maps and lists of questions to focus one's understanding. Mind maps are suggested as a visual way to summarize previews.