Step 1 – Installing the requirements
Until the download is over, make sure that you have Java installed and the 32-bit libraries (for the x86_64 users ONLY). If you don’t have Java (or the 32-bit libraries), go to System -> Administration -> Synaptic Package Manager, search for openjdk and double-click on the openjdk-6-jre entry, then, search for ia32-libs (ONLY if you are on a x86_64 machine), and double-click on the ia32-libs entry. Now, click the “Apply” button to install the packages. Wait for the packages to be installed and close Synaptic when the process is finished.

Step 2 – Android Setup
When the Android SDK download is over, right-click on the file and choose the “Extract Here…” option. Enter the extracted folder, then enter the tools folder and double click the android file. Click on the “Run” button when you will be asked what you want to do, and the Android SDK and AVD Manager interface will appear. Go to the “Settings” section and make sure you check the “Force https://…” box. Click the “Save & Apply” button.