One main problem many players have with the standard WoW interface is the lack of much of the key information they want readily available, and out of that need many turn to UI mods.
One of front-runners of the mods designed to meet this need is FUBAR, which allows the user to display a thin toolbar along the top and/or bottom of the screen - on which a number of helpful information can be displayed... which can be customised and extended by adding one of the huge number of additional fubar elements.
Just some of the information you can display is how much gold you have, remaining ammo, quest data, item bonuses durability summary, XP monitor free bag space and more.
Personally I couldn't stand to play WoW without a mod like this now.
Find out more and download it from
here