Try the book 'Dancing with the Wheel' by Sun Bear, Wabun Wind and Crysalis Mulligan. It's incredible for teaching the Medicine Wheel.
Also Medicine Woman Cinnamon Moon has written much information in her Medicine Wheel Library on
www.spiritlodge.yuku.com if you are looking for free internet resources.
Many Blessings on your journey with this!
I've grown with the Wheel for years now and it never ceases to amaze me how many mysteries and truths it holds.
*warm smile*