Isolate a Background Using Color - Gimp Video Tutorial

This Gimp Video Tutorial talks about a very cool discovery I recently made while writing my upcoming book on layer masks. I was digging through Gimp's documentation, and discovered exactly how Gimp looks at colors to determine how light or dark parts of any image is when you desaturate it.
This video talks about how you can take what I learned and apply it to your layer masking using gimp.

My book on layer masks can be found on Amazon.com for 4.99. Click here to take a peek inside!

The Photo used in this Gimp tutorial can be downloaded from here.
Free eBook - Principles of Photo Editing.

Related Tutorials:

Copy of Layer Mask Script:
How To Use Gimp For Beginners - Layer Masks explained:
How To Use Gimp For Beginners - Colors and Exposure:

Tutorials of photos shown in the beginning of the video:

Product Photography Using Gimp (Photo of Beer):
How To Make a Zombie Using Gimp:
How To Make a Girl Cold and Scary Using Gimp:
How To Make a Photo Look Vintage or Retro Using Gimp:

Gimp Video Tutorial - How To Use Gimp To Crop in Bulk

Script File: http://registry.gimp.org/files/export-layers.scm This Gimp video tutorial teaches you how to open several images and crop them down in an efficient manner. Related Tutorials: How To use gimp for beginners - Layers and Selections