I'm glad you made progress with Georgie.
I think the BirdTrick guys give the technique you describe some sort of fancy name, but it's not a revolutionary method. You can learn all about positive reinforcement (and negative punishment, such as removing disliked stimulus) training methods from folks like Melinda Johnson and Barbara Heidenreich - a lot of materials are available for free and without all the hard-sell, pushy marketing practices you'll encounter from folks trying to rush, rush, rush you into buying their "secret" programs for lots of money.
I really recommend joining Johnson's
Bird Click group on Yahoo before you go out and buy any new training materials. There is a lot of great material there for free that will show you how to tame your bird while also always giving them choices. Choice is critical when working with animals to build trust.
Congrats on these first steps. Look forward to hearing about more of your progress.