If you are a beginner, I would focus on the beginning. The active exercises and small universe meditation both address general health, and are a place to start working on self healing and transformation. Many specific conditions are addressed in Level II. Level II is an extention of Level I, not a replacement or alternative. Establish a life style change and spend time doing the exercises. Level II will then move on to some specifics. You won't be postponing anything, the healing starts when you start working on the exercises. Diet is also something easy to address at the beginning. Perhaps someone else can elaborate on that for you. I know Master Lin mentions various foods in regards to health, both general and specific.
