Adjustment Layers

Here are examples of the many many adjustment layers.

Starting with the original.

Now,

Brightness/Contrast

Levels

Exposure

I feel like they all kind of look the same, so how about something different.

Vibrance

Color Balance

And...

Channel Mixer

I used adjustment layers on each one, the picture corresponds with the label above it. Each one was relatively simple to use if you know what each one is supposed to/able to do.


Here's a reference link which is very helpful for finding out which one can do what:

http://99designs.com/designer-blog/2013/12/02/how-to-use-adobes-adjustment-layers-photoshop-cs6/