Previewing draws on your existing knowledge and invites you to consider what you already know about this topic, author, or publication. Then consider what fresh facts you could encounter when you return to examine this paragraph more attentively. Previewing helps you identify important information in a way that reviews cannot. The best time to preview is immediately after reading or gathering information about a topic. This gives your brain a chance to process the material just read or gathered before moving on to something new. Previewing also allows you to form an idea of how much time it will take you to read or gather more information about a given topic. Be sure to give yourself enough time to thoroughly review the content you're looking at. Whether you choose to preview paragraphs or pages, allot at least five minutes for this activity. If you want to get really detailed, you can even estimate how long each section of the article or book will take you and plan your review around those estimates. Now that you know how useful previewing is, you can use this tip to its fullest advantage!