Online lessons can be done via Skype or in your web browser via Google hangouts. If you have downloaded Skype already, there is no need to download any extra software.
You will have a set time where you start your lesson.
Your tutor can send you a PDF with notes made during the lesson.
For all the instruments you will need a computer or laptop with either a built-in or a separate webcam.
A high-speed broadband internet connection.