You can create copies of any layer you need, not just the background one. You can always delete this layer and your image remains intact.
This will allow you to work on this copy and not directly in the image. When you open your image to edit it in Photoshop it is highly recommended that you create a copy of your background layer (aka your image). If you use default settings, your new layer will be a blank transparent one. You also have options such as opacity, color or blending mode. You can create a new layer with the shortcut Shift+Ctrl+N (Window) or Shift+Cmd+N (Mac).Ī dialog panel will appear where you can rename the new layer.
If there is something that characterizes Photoshop is its workflow based in layers.