Hi Pete, loyalty should be earned, not demanded. Buy services and products from whoever you like, trust, hear good things about, and gives what seems a reasonable deal. As Junglist said, lessons are a small part of the cost in kiting so don't skimp.
Make sure in advance that your instructor will cover such things as flagging, self-rescue, body dragging upwind as well as down, safety considerations when launching and landing, right of way rules and general kiting etiquette.
These forums contain many pages of good information (and a fair bit of gratuitous silliness) so use the search button to find out more on the above topics.
For quickest progression, buy a trainer kite such as the Ozone Imp and learn to fly it in a large open space well clear of people or obstacles. After several hours flying time, then get lessons, then start considering what gear you'll need.
First things first, stay safe, and you'll have a great time.
This vid from the forum's own Steve McC is a good start