Android SDK
The next important piece of software you need to download is, of course, the Android SDK. The Android SDK contains a debugger, libraries, an emulator, Documentation, sample code, and tutorials. You can download the Android SDK from http://developer.android.com/sdk/index.html.Once the SDK is downloaded, unzip its content (the android-sdk-windows folder) Into the C:\Android\ folder, or whatever name you have given to the folder you just Created.
