This is directed really to any skeptics or anyone out there still wondering if GMC works: this thread is your answer.
When I signed up for GMC 2 years ago, the epitome of my technique was the pentatonic scale. I hammered out power chords, and only knew the aformentioned scale in first position. I learned Green Day songs at half speed. Last night, I played for 400 people, playing Satch Boogie, Trilogy Suite Op. 5, and Pride and Joy. That's what I would call progress. It wasn't fast, admittedly. It took me awhile, and a lot of practice. My very first lesson was Kris' Kirk Hammett lesson. I thought that was so difficult... I surmounted it slowly. I watched the 1-on-1 videos. I haven't had a single teacher the entire time, but with GMC, I'm able to go out with a guitar, play, and have people stand around me and watch and give money... In conclusion, thanks to GMC and all the people that make it what it is!