Wikivid, an offshoot of Wikipedia, is a video encyclopedia of tutorial videos, that is currently in the Alpha stage. Being a wiki, any page can be edited by anyone. At the moment, Wikivid content is limited to software related videos, all of which are free.

The category most of interest to photographers is the Photoshop category. Wikivid links to over 550 free video tutorials covering all aspects of Photoshop. Here’s a look at the contents page.

• 1 Setup
• 2 Basics
  • 2.1 Interface
    • 2.1.1 Menus and Workspace
    • 2.1.2 Panels
      • 2.1.2.1 Align Panel
    • 2.1.3 Palettes
    • 2.1.4 Shortcuts
  • 2.2 Getting Started
  • 2.3 Toolbox
    • 2.3.1 General
    • 2.3.2 Brush
    • 2.3.3 Selection
    • 2.3.4 Pen & Vectors
    • 2.3.5 Clone & Heal
    • 2.3.6 Blur, Burn, Dodge, Smudge, Blue
    • 2.3.7 Eraser
    • 2.3.8 Paint, Color
    • 2.3.9 Slice
    • 2.3.10 Crop
    • 2.3.11 Zoom
    • 2.3.12 Shapes
    • 2.3.13 Text
    • 2.3.14 Misc.
  • 2.4 Preferences
  • 2.5 Hardware
• 3 Layers
  • 3.1 Masks
• 4 Filters
  • 4.1 Intro
  • 4.2 The Filters
  • 4.3 The Non-Filter Filters
• 5 Effects
  • 5.1 Lighting
• 6 Smart Objects
• 7 Color
• 8 Image Size
• 9 Retouching
  • 9.1 Clone Stamp
  • 9.2 Patch Tool
  • 9.3 Healing
  • 9.4 Vanishing point
• 10 Text
  • 10.1 Text Effects
• 11 Perspective
  • 11.1 3D
• 12 Channels
• 13 Actions, Automation
• 14 Saving, Exporting, Printing
• 15 Animation
• 16 Tips & Techniques
  • 16.1 Photorealism
• 17 Camera Raw
• 18 Digital Photography
• 19 Scanning
• 20 Web
  • 20.1 Web Basics
  • 20.2 Animations
  • 20.3 Web Optimization
  • 20.4 Web Automation
• 21 With Other Programs
  • 21.1 Flash
  • 21.2 After Effects
  • 21.3 CorelPainter
  • 21.4 Adobe Bridge
  • 21.5 InDesign
  • 21.6 Illustrator
  • 21.7 Final Cut Pro
  • 21.8 Encore DVD
  • 21.9 LightRoom
  • 21.10 ActionFX
• 22 Examples
• 23 Misc.

I’m sure you’ll find plenty there to improve your Photoshop skills and knowledge.