I use a wide variety of sources for learning music, and OpenStudio is my favorite. It is high quality in all dimensions: teaching, performing, audio/video, community, personality... Great array of teachers, all of whom are serious pro's (a handful of them just finished a run at the Village Vanguard! Together!). Every lesson focuses on a tune or on a concept, and gives you a lot to explore (most of them will take more than just 1 week to really get the most out of!). So there is never a shortage of lesson material. I made steady progress as a student since I joined!