Now you've installed the Android SDK Tools package, which contains the adb tool. You'll need to install the Android SDK using the Android SDK Manager.
Note: You start the Android SDK Manager in different ways on Windows, Linux and Mac OSX computers:
Windows: Double-click the SDK Manager.exe file in your Android SDK folder.
Mac OSX and Linux: Open a terminal window and navigate to the tools folder in your Android SDK folder, then execute android sdk.