I have just signed up to guitar tricks because I was fed up of my instructor going too quick and not explaining any techniques which could help me. I have also tried to learn from youtube and other online sources without success.
I think that these lessons are great, they are short and clear and they allow me to watch a little bit and then practice before moving onto the next video. This weekend I have not wanted to put my guitar down because I actually feel like I am making progress and even enjoyed playing jingle bells.