In many studies of the Tree of Life the custom is to begin with the First Sphere at the top of the Tree- Kether- and work your way downward in understanding and grasp of the material. The rationale being to begin with the Highest and most refined of energies and concepts and form the basis of understanding from the perspective of the Creative Nature of the Source of All.

In this series of articles, we will be starting at the base of the Tree- the Tenth Sphere of Malkuth. We live in the manifest world. We are Spirit encased in physical matter, and as such have access to both the most refined and the densest of realities. By starting our journey in the place we call home and moving through its many levels- concrete physicality, elemental and spiritual levels existing within this plane of earth we have a very personal point of reference to carry us through as we move into those realms where even the most articulate and succinct of words barely touch the surface of understanding. And, so we begin, anchored in the reality of our plane of existence and ever aspiring upward.

(via Witchvox Article)