Welcome Developers! 
                       If you are new to the Android SDK, please read the steps below, for an overview of how to set up the SDK. 

You can uses either NetBeans IDE or Eclipse.
We are preferred you to use Eclipse, because  Eclipse is light weight and the performance is very good compare to NetBeans. Download Eclipse Classic for Android.

Here's some link is below to download Android SDK

Download SDK
To Installing the SDK