Experience. I originally founded Shea's Golf Shop 35 years ago in Cuyahoga Falls, Ohio which my wife and I had evolved into a 7,000 sq ft facility of totally all golf retail, club repair, custom clubs and golf lessons with over 500 golf lessons per season. Since closing the facility in the late 1990's, my golf lessons have continued, moving to the area driving ranges.
When you come in for your first lesson I will first look at your current swing using video to analyze where your problem areas are. I will then focus on a few drills and swing thoughts per each session. Should you choose, you can also take home a video of your session along with a swing diagnosis with the recommended drills to practice on.
Indoor, at the range and on the course. Lessons are first conducted in my outdoor net. Eventually lessons can be done at the range for further 'live' improvements and in some cases, your lesson can be taken to the course for 'on course management.'