When can you move on to advance
I generally say "2 weeks" but there isn't a clear line between "Beginner" and "Advanced" -- binaural beats affect everybody differently. Some people who try "Advanced" right away report headaches and nightmares, whereas others can jump right in without any problems. It's entirely up to you, I tend to be a bit more on the careful/paranoid side of things. ;)
Koen433