Skype guitar lessons are very easy to plan, and are a very efficient way of learning and improving on guitar. This method openned a whole new perspective to me as a guitar teacher. Advantages are :
No waste of time: Learn guitar from where you are, in your room, office, classroom, no need for a 40 min ride way and back.
Warm up and prepare a song minutes before the session !!
Keep praticing right after the session and don't lose your feel !
Theme sessions are very efficient way to learn guitar, and student oriented.
I can see you play in your usual pratice environment, which allows me to correct bad habits in practice.
Fretboard closeups like you never seen before !!
You can RECORD the sessions and watch it anytime !!