The document summarizes the symbols associated with Creative Commons licenses and their meanings. It also lists 6 different Creative Commons licenses and things to consider before licensing one's own work with Creative Commons. The key symbols are Attribution, Non-Commercial, No Derivatives, and Share Alike. The 6 licenses listed are Attribution Non-Commercial No Derivatives, Attribution, Attribution No Derivatives, Attribution Non-Commercial Share Alike, Attribution Share Alike, and Attribution Non-Commercial. Before licensing, one should ensure the work is copyrighted, they have rights to license it, understand how the licenses work, and be specific about what is being licensed.