Android development starts with the Android SDK - a collection of tools needed to build any kind of Android app. Discover what's included and how to use it.

Visit the Android Developers site to download and install the Android System Development Kit, or SDK (see Resources). To install the SDK, double-click the downloaded archive to extract the contents.

Here is the gist: Download and install the Android SDK, which gives you access to the emulator. Android developers should already have this step done.