Adjustment layers are a great way to edit, because they don’t permanently change anything. Use them to adjust all or part of a photo or layered image.
This video introduces the concept of adjustment layers in Photoshop through basic photo editing.

Understand adjustment layers
Use adjustment layers to change certain image qualities like light and color.
Rearrange layers
Reorganize your layers to determine which details are affected by your adjustment layers.
Make a selection
Using the Quick Selection tool, instantly select a specific area of the image for targeted adjustments.
Change a selection’s color
Change the color of a selected object with a Hue/Saturation adjustment layer.
Exercise precision with adjustment layers
Edit your image with layers, selections, and masks all working together.
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Adobe Stock Contributor
September 29, 2022You'll get step-by-step instructions that guide you around the interface.