I've been a member for a few years now, and SoundFly is a rock solid organization for creative musicians, composers, and producers. Courses are well made, instructors are supportive and knowledgeable. It's a great place where you can expand or advance your creative talents, or check back on technical details from one of the courses when you're stuck trying to mix something. Check out their list of courses they offer -- there's bound to be a few that catch your eye! Try one!