A layer style is one or more effects that are applied to a layer. You can find 10 different effects that can customize with from color, opacity, etc. You can save the layer style you created as an ASL file, which you can use on other layers.
You can also find a lot of styles on the internet. Some for purchase and a lot of free styles.
Do you know of any web sites?
Have you used layer styles.
How have you used your styles.