How to add a new background layer in photoshop

- How to add a background layer in photoshop
- How to add a white background layer in photoshop
- How to add image to background layer in photoshop
- How to add color to background layer in photoshop
- How to add a black background layer in photoshop
- How to add photo to background layer in photoshop
- How to add colour to background layer in photoshop
- How to add layers in photoshop