Here's an overview of the steps you must follow to set up the Android SDK:
1.Prepare your development computer and ensure it meets the system requirements.
2.Install the SDK starter package from the table above. (If you're on Windows, download the installer for help with the initial setup.)
3.Install the ADT Plugin for Eclipse (if you'll be developing in Eclipse).
4.Add Android platforms and other components to your SDK.
5.Explore the contents of the Android SDK (optional).