Photoshop actions are recorded processes that enable you to "play" back those steps faster than you could carry them out manually. They are specifically designed to speed up your workflow and decrease the amount of time you spend carrying out redundant tasks. What may normally take you 5 or 10 minutes to complete by hand, can be completed in a matter of seconds with photoshop actions for photographers.
In addition to speeding up your workflow, photoshop actions are great for simplifying Photoshop (which, let’s face it - is a monstrosity of a program to learn!). Photoshop actions for photographers open up creative techniques that you may not have otherwise tried on your images. They give you the tools to expand your creativity!