I did wonder at first whether it was genuine since it was an overseas website and there was no backup or support offered. I downloaded a full manual, and was told that I was to be attuned to 'master' level (all 3 levels at once) giving me access to all of it.
Their philosophy was also... "Reiki is for everyone and not everyone can pay high prices and have access to a master/teacher"
Since I was attuned, I've been learning slowly, on my own, how to use it.