We all have heard of left foot breaking, whether it was from our driving instructor who said it was dangerous, or from some magazine that said it was a track only technique.
But actually, Left Foot Braking is beneficial for both street and track, and this is because it allows you to control weight transfer during a corner, keeping grip constant and therefore intuitively predictable.
Although this technique requires some practice, the concept is very simple, just use your left foot to feather the brakes, while the right one applies throttle input; this simple method has various uses, for example, you can brake more smoothly into a corner, avoiding potential over-steer due to weight transfer to the front wheels.
Chris Harris gives an excellent explanation of Left Foot Braking in the video below.