Android Support Libraries

References

• Support Library
• Support Library Packages : list of libraries
• Support Library Setup

Potential issues

• Could not find com.android.support:appcompat-v7:25.3.1 : my answer

Setup

From now on :

The support libraries are now available through Google's Maven repository. 
You do not need to download the support repository from the SDK Manager.

Configure the access to Google's Maven repository like this in <PROJECT_ROOT>/build.gradle :

allprojects {
    repositories {
        google()
        jcenter()
    }
}

Check latest version

For example for com/android/support/appcompat-v7, you can check the latest version by following this link.