Do you already have the Skype application installed and a Skype account created (requires a Microsoft account which requires an email address). Please comment below with a bit more info on where you are currently standing and we will gladly advise further. Other, you can download and install the Skype app from the 'Play Store' - then launch it when done and you will be able to create a Microsoft account from there (assuming you already have an email address). You can open a new email address by following the instructions here.