From the Book - Second edition.
Opening, viewing, and saving files
Layers : the key to nondestructive editing
Selections : choosing what to edit
Cropping, resizing, and rotating
Draining, changing, and adding color
Correcting color and lighting
Changing reality : removing and repositioning
Drawing with the vector tools
The wide world of filters
Working smarter with actions
Beyond Photoshop : plug-Ins