Below are some of the addons we recommend installing before jumping into any Guild PvP events. These are essential for rated play:
- Capping Battleground Timers to see when flags are finally capped.
- Battleground Enemies displays all enemies and their CDs.
- REPorter - Battleground Map displays an additional overview map.
WeakAuras is another handy one. It's a very configurable UI framework. Not essential but very helpful once setup and can be used for almost anything UI wise. It does require some configuration however. You can find many Auras you can import here.