Some links to tutorials
Full tutorial using a wolf
Understanding the tools
Fixing 'Demonic' Eyes
Removing a Pet from it's original background
Working in Layers Part 1 Part 2
Using Brushes to make a background (this is an image file) #1
Using Brushes to make a background (this is an image file) #2 - full sig tutorial
Understanding Layer Blending Modes
Save for web
Full tutorial using a wolf
Understanding the tools
Fixing 'Demonic' Eyes
Removing a Pet from it's original background
Working in Layers Part 1 Part 2
Using Brushes to make a background (this is an image file) #1
Using Brushes to make a background (this is an image file) #2 - full sig tutorial
Understanding Layer Blending Modes
Save for web