Photoshop for Basic Photo Editing

1st step: Straighten Horizon Lines

Horizon Lines Tutorial

2nd step: Levels (click on video link below)

Levels Tutorial

3rd step: Curves

Curves Tutorial

4th step: Hue/Saturation

Hue/Saturation Tutorial

5th step: Balance

White Balance Tutorial

Colour Balance Tutorial

Extras...

Night Photography Tips

Retouching Night Photos

Photographing & Editing Star Trails

Star Trail Photography Tips