This document provides advice on how to manage your online reputation by understanding how networks and the web work. It outlines 9 rules for curating your online presence and digital identity, including checking your web shadow, being the primary source of information about yourself, understanding your networks, being present and useful online, maintaining public and private profiles, knowing that anything posted is permanent, developing a thick skin, and recognizing that the online world is still part of the real world. The overall message is that how much you understand about networks can impact your future freedom, wealth, and participation online.