O'Reilly Digital Media Book: GIMP 2.6 for Photographers: Image Editing with Open Source Software

Chapter 2: Using GIMP: Correcting and Touching Up Your Images
JPEG versus RAW
Opening and Developing a RAW Format, or Digital Negative, with GIMP
Editing Images in GIMP
Working with Scanned Images
Scanning and Editing an Image
Touchup Work 1 - Removing Color Cast
Touchup Work 2 - Removing Spots, Dust, and Scratches
Performing Magic - Editing Photographs with Graphic Filters

Chapter 3: Using Masks and Layers - Painting, Filling, and Color Tools
Introduction to Masks and Selections
Touchup Work 3 - Removing Red Eyes
Introduction to Working with Layers
Touchup Work 4 - Correcting Overexposed or Underexposed Images
Touchup Work 5 - Using Perspective Correction to Remove Converging Verticals
Touchup Work 5 - Freshening Up a "Dull Sky"
Typing in GIMP - Adding Text to an Image
Creating Your Own Image Frames and Vignettes
Creating and Editing Image Elements - Lighting Effects and Shadow Layers
Extracting Image Objects with Select and Masking Tools
Using the Paths Tool as a Masking Tool - Using Filters for Light Effects
Using Layers, Masks, and Paths to Create Three-Dimensional Objects - Shadow Layers
Cross-Fading with Masks and Selections
Collages - Using Masks and Selections to Cut and Paste Image Objects
GIMP and HDR

Chapter 4: Working with Black-and-White and Color Images
Converting Color Images Partly or Entirely into Grayscale Images
Touching Up Black-and-White Images-Levels, Brightness, Contrast
Extracting Hair from the Background - a Tricky Task
Coloring Grayscale Images
"Hand-Colored" Collages from Black-and-White Photos

Chapter 5: Appendix
The IWarp Filter - a Closing Comment
So Far, So Good-How to Proceed from Here: Tips and References
A GIMP 2.8 Preview
Thank You!
Further Reading on GIMP: References
What's on the DVD
Native GIMP File Formats

Appendix