Using Skype for your language course or just for some lessons means that you don't have to leave home or your office to talk to your tutor even if you live in another country.

Most laptops today have buillt in webcams, microphones and speakers so you don't even need a headset. The webcam also enables a natural conversation with the same range of non-verbal signals as a face-to-face meeting.

Skype is also incredibly user-friendly for the language learner:

the sound is very clear;

the chat function means the tutor can make
corrections and offer vocabulary suggestions or
recommend websites and that this information will be
kept long-term on the website for reference;

the attach documents function enables the tutor
send the student documents or other files, including 
homework !