Layers can be used to work on individual parts of a content or an image while not affecting other parts. It allows you to adjust or edit your text, image, change colors and many more without modifying your originally created design.
How to use: As you know layers are created as and when you are creating a new content box or getting a new object on the canvas. You can see that by clicking on the layer tool. You have three tabs given on the layer function, you can use these functions to hide/unhide, lock/unlock, delete whatever you want to from the canvas, just by clicking the function. This tool makes your work easy and simple to implement different objects and check how your design will display.