Circle of Light, Messages from God. Awesome books and email messages. You can sign up to receive the email messages.
"The Celestine Prophecy" series of books, By James Redfield. These books will help you understand the use/importance of 12 major spiritual insights but particularly the importance of energy in all of our interactions.
"Inside-Out Healing" (book) by Richard Moss. For those who have come to realize that the stories they tell themselves are what is causing their own dramas and pain; and tools for shifting into the NOW and staying present.
"Ghosts Among Us" by James Van Praagh. It is the clearest and most accurate description of life beyond death that I have come across yet.