Tibia Classic Control
Are you ever annoyed by having to click, then press attack, use, or look?
Then do this. During gameplay, press Options, General, and check Tibia Classic Control.
Now, you can open a container with just a right click, attack a monster with right click, use things with right click, and more. Play around with it, and you'll get used to it.
Warning: Tibia Classic Control enabled will also higher the chance of accidentally misclicking on someone and attacking him, or accidentally use a rare item/food.