1. Open a photo for editing in Photoshop
2. Open the Actions window by going to Window > Actions
3. Start a new action by selecting the folded-page icon
4. On the dialog, name the action and set its color
5. Click "Record" to begin recording. All actions from this point on will be recorded into the action and therefore repeated to all photos the action is applied to
6. Apply adjustments to the photo
7. Make sure you save the image, but do not change the name when saving
8. Stop recording by clicking the square "Stop" button on the Actions window's bottom bar
9. To apply the action, open a new image, select the new action in the Actions window, and click the triangle "play" button on the bottom bar