I've collected all the links for the Aperture 2.0 videos together in one place for convenient clicking. If you use Firefox you will be able to download everything for offline viewing with a tool like FlashGot.

Quick Tours

Streamlined UI
Adjustment Tools
Platform Integration

Tutorials

Exploring the Interface
Customizing the Keyboard
Importing Basics
Tethering
Using Aperture and iPhoto Together
Making Multiple Selections
Using the Loupe Tools
Using the Zoom Tool
Using Quick Preview
Using the Sort Tool
Applying Ratings
Using Compare Mode
Using Stacks
Using Stack Mode
Assigning Keywords
Viewing Multiple Displays
Filtering and Searching in Aperture
Skimming All Projects
Creating Albums and Smart Albums
Using Light Tables
Using RAW Fine Tuning
Cropping and Straightening
Adjusting White Balance
Adjusting Exposure
Recovering Highlights
Enhancing Your Images
Setting Levels
Setting Advanced Levels
Adjusting Highlights and Shadows
Improving Color
Using the Retouch Brush
Applying Vignette and Devignette
Applying Black & White and Color Effects
Sharpening Images
Using Lift and Stamp
Editing Metadata
Adjusting Date and Time
Embedding and Exporting Metadata
Exporting Versions, Masters, and Projects
Making Prints and Contact sheets
Making Books
Creating Web Pages
Creating Web Galleries
Creating Slideshows
Using Export Plug-ins
Exploring Presets
Using Aperture and iPhoto Together
Creating Advanced Slideshows with Keynote
Making Photo Movies with iMovie
Accessing Aperture through Leopard

Tags: Aperture, Updates, Video