From Citizens Wiki

Installing Citizens 2.0 is easy. It is like installing any other Bukkit plugin. If you don't know how to do that, see below.

Installing Citizens 2.0

  1. Download Citizens here.
  2. Place the Citizens 2.0 jar in your /plugins directory.
  3. Download any desired Trait plugins and place these in the /plugins directory as well.
  4. Reload or restart your server. Citizens 2 will create a plugins/Citizens folder and a config.yml file.
  5. Configure Citizens to your liking with config.yml. See the Configuration page for more help.
  6. Reload or restart your server.
  7. Start creating and editing NPCs!
  8. Be sure to set Permissions so your players can interact with NPCs.
    • Note that players need the permission to hear NPCs!