Which are you planning to play so I can recommend a specific WeakAura setup?

While 3.3.5 introduced basic quest tracking, QuestHelper provides the most efficient pathing and icons on your map to speed up leveling.

This is the most powerful tool in your arsenal. It allows you to create custom icons or bars to track procs (like Art of War or Sudden Doom ), internal cooldowns, and debuffs.

Merges all your separate bags into one large window. It also colors items by rarity and lets you search your inventory by name.