If, like me you occasionally enjoy sitting down with a good book, here are a few which explore various notions of what this energy is - it's appropriate to keep in mind each author has a particular context from which they are coming from, but that at least gives a wonderful diversity of interpretation.

"Spiritwalker - Messages from the Future" Hank Wesselman, 1996, Bantam Books.

"The Mayan Factor: Pathway Beyond Technology" José Arguëlles, 1987, Bear & Company.

"Kundalini: The Mother Power" Sri Chinmoy, 1974, Agni Press.

"The Pleiadian Agenda: A New Cosmology for the Age of Light" Barbara Hand Clow, 1995, Bear & Company.