Enhanced Client

User Settings
In this very helpful video,Youtube user UltimaOnline W2 gives us a rundown of the Enhanced Client’s User Settings.

Mods
Youtube user UltimaOnline W2 shows us how to install the most popular EC mod Pinco's UI

Note
Pinco's UI is so popular, it's got its own wiki: http://pincosui.wikia.com/wiki/Pinco%27s_UI_Wiki