Photoshop tutorial starting from basic and moving on to Advanced features. This tutorial also gives some examples to make the learning easy.
Table of Contents

Part One : Basic Tools

What is Photoshop
What Does Photoshop Do?
The Photoshop Workspace
The Menu Bar
The Drawing Canvas
The Tool Box
The Palettes
Drawing Things on the Canvas
Choosing a Color
Defining the Brush
The Pencil Tool
The Paintbrush Tool
The Line Tool
The Airbrush Tool
The Text Tool
The Paint Bucket Tool
The Gradient Tool
Modifying Things on the Canvas
The Eraser Tool
The Smudge Tool
The Focus Tool
The Toning Tools
The Eye Dropper Tool
The Zoom Tool

Part Two : Advanced Tools

Selecting Things
The Marquee Tool
The Lasso Tool
The Magic Wand Tool
The Move Tool
The Crop Tool
Channels
Masks
Layers
Fills
Cloning
Filters
Text Manipulation

Part Three: Learn by Example

Real World Example
Backboard Underpainting
Rainbow Facade Preparation
Rainbow Facade Creation
Logo Text
Logo Text in 3D
Visual Illusion
Save as: File Formats
Buttons
Shadows
Beveling
Arrows