The BEAM Framework (Bizup, 2008) is a way to think about a source's relevance to you as a writer. What can you do with a source?
Read the short chapter on BEAM from the open textbook, Choosing & Using Sources: A Guide to Academic Research. Chapter 13 ("Roles of Research Sources") includes an introduction, an overview of BEAM, an example, and practice activities.
Or watch this quick video from Vanderbilt Libraries Teaching & Learning (2023):