Question for Ruby Slipper Readers

I've had several requests to publish astrology/Tarot lessons. I'm thinking of doing this, most likely in a PDF version that would be purchased and downloaded off this site. It would be reasonably priced and written in a straightforward and practical way. My goal is for you to be able to apply what you learn. What would you like me to write about? Astrology? Tarot? It's a toss up right now between the two, and I'll decide based on how many requests for each.

What topics would you like me to cover...beginner or advanced? Some people have expressed an interest in absolute beginner lessons. Others want something more advanced, but written in an accessible manner. This probably won't happen until 2015, but I'm gathering ideas now.