Matteo teach in New York City  at his home studio or via Skype. If you want to book a lesson or have more info, you can send an email at lesson@matteoprefumo.com.
In function of his tour schedule, if you see a concert close to your home, you can contact Matteo and ask him if he is available for a private lesson.
The lessons are open to every instrument, not just guitar.
You can do a lesson of 1h every week or 2 lessons of 2h every month (Skype lessons only of 1h).