Grouping involves categorizing the evidence you’ve obtained from your sources. Paper-based notes and copies of sources can be placed in related piles or file folders; sources and notes in word-processing files or on a smartphone can be saved in larger files or placed in folders; items in Bookmarks or Favorites lists can be sorted by category. Placing things that are similar in groups allows you to locate the evidence you’ve collected more easily and helps you understand the range of evidence you might use to support a particular point.