Here are links to resources available for Windows Azure:

What is Cloud Computing?

• Cloud Computing Explained

• Electricity and Cloud Computing

What is Windows Azure platform?

• Read the Whitepaper

• Watch a video

• Visit the site

Windows Azure Overview

• Read the Whitepaper

• Watch a video

• Azure Compute Overview

• Azure Storage Overview

• Watch a video on Azure Storage

SQL Azure Overview

• SQL Azure Getting Started

• SQL Azure Whitepaper

• SQL Azure present and future

• FAQ

AppFabric Overview

• Watch a video

Developer Portal & Service Management APIs

• Developer portal

• Service Management APIs