Creates a motion guide through the keyframes in a layer. Your animation will became much more beautiful moving things in arcs.

Creating a Motion Path

Open the Plugin by clicking Window/Other Panels/[T] Motion Path.
Create at least 3 key frames, positioning the instance where you want.
Select the layer.
Select the amount of strength between 1 and 30.
Press the button Create Motion Path. This will create a layer above with segments of curves and apply it as a motion path.

Learn how to assign a hotkey to this button.

Strength

Enter a number between 1 and 50.
Press the button Create Motion Path.
The more strength the more straight the path will be.