Forums IMPORTANT: PLEASE READ Spring Forest Qigong Qigong Levels 1,2,3,4 ?

I purchased the Deluxe Qigong course of levels 1 and 2. I'm finding that there are also levels 3 & 4. Hmm. Can someone say something about the additonal levels and give some guidance on advancing in Spring Forest Qigong. I had thought I purchased everything.